From 4db3e3134b8501e737e1b8902aab8d852f9308dd Mon Sep 17 00:00:00 2001 From: "weiye.wang" Date: Sun, 3 Mar 2024 21:21:10 +0800 Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9E600=E4=BD=99=E4=B8=AA?= =?UTF-8?q?=E7=AD=94=E6=A1=88?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 工具v2/文本文件/metadata.txt | 1837 +++++++++++++++++++++++++++++++++- 题库0.3/Problems.json | 1046 +++++++++---------- 2 files changed, 2339 insertions(+), 544 deletions(-) diff --git a/工具v2/文本文件/metadata.txt b/工具v2/文本文件/metadata.txt index 00bf60d2..feb69cb3 100644 --- a/工具v2/文本文件/metadata.txt +++ b/工具v2/文本文件/metadata.txt @@ -1,30 +1,1825 @@ -usages +ans + +018366 +(1) $x=\dfrac{\pi}{3}+2k\pi$或$\dfrac{2\pi}{3}+2k\pi$, $k\in \mathbf{Z}$; (2) $x=\pm \dfrac{3\pi}{4}+2k\pi$, $k\in \mathbf{Z}$; (3) $x=k\pi+\dfrac{\pi}{6}$, $k\in \mathbf{Z}$ + +018367 +(1) $\{\dfrac{\pi}{6},\dfrac{\pi}{3},\dfrac{7\pi}{6},\dfrac{4\pi}{3}\}$; (2) $\{x|x=2k\pi+\dfrac{\pi}{12}\text{或}x=2k\pi-\dfrac{5\pi}{12}, \ k\in \mathbf{Z}\}$; (3) $\{x|x=\dfrac{k\pi}{2}+\dfrac{\pi}{4}, \ k\in \mathbf{Z}\}$ + +018369 +(1) $x=-\dfrac{\pi}{2}+2k\pi$, $k\in \mathbf{Z}$; (2) $x=\pm \dfrac{\pi}{6}+2k\pi$, $k\in \mathbf{Z}$; (3) $x=\dfrac{\pi}{4}+k\pi$, $k\in \mathbf{Z}$ + +009563 +(1) $\{\dfrac{\pi}{2},\dfrac{11\pi}{6}\}$; (2) $\{x|x=k\pi+\dfrac{5\pi}{24}\text{或}k\pi-\dfrac{11\pi}{24}, \ k\in \mathbf{Z}\}$; (3) $\{x|x=\dfrac{k\pi}{3}+\dfrac{\pi}{6}, \ k\in \mathbf{Z}\}$ + +018372 +$\dfrac{\sqrt{6}-\sqrt{2}}{4}$, $\dfrac{\sqrt{6}+\sqrt{2}}{4}$ + +018373 +$-\dfrac{56}{65}$ + +018375 +$\dfrac{\pi}{3}$ + +009564 +(1) $\dfrac{\sqrt{2}}{2}$; (2) $\dfrac{\sqrt{3}}{2}$ + +009565 +$-\dfrac{7\sqrt{2}}{26}$ + +018377 +(1) $\dfrac{\sqrt{3}}{2}$; (2) $\cos 2\alpha$; (3) $-\cos 3x$ + +018376 +$-\dfrac{4}{5}$ + +018378 +$\dfrac{\sqrt{6}-\sqrt{2}}{4}$ + +018379 +证明略 + +018380 +(1) $-1$; (2) $\dfrac{1}{7}$ + +018381 +$-\sqrt{3}$ + +009567 +(1) $\dfrac{\sqrt{3}}{2}$; (2) $\sqrt{3}$ + +009568 +$\dfrac{\sqrt{2}}{10}$, $7$ + +009569 +(1) 证明略; (2) 证明略 + +018385 +证明略 + +018386 +$(-\dfrac{\sqrt{2}}{2},\dfrac{3\sqrt{2}}{2})$ + +018387 +(1) $\sin(\alpha+\dfrac{\pi}{3})$; (2) $\sqrt{2}\sin(\alpha-\dfrac{\pi}{4})$; (3) $5\sin(\alpha+\varphi)$, 其中$\cos\varphi=\dfrac{3}{5}$, $\sin\varphi=\dfrac{4}{5}$; (4) $\sqrt{a^2+b^2}\sin(\alpha+\varphi)$, 其中$\cos\varphi=\dfrac{a}{\sqrt{a^2+b^2}}$, $\sin\varphi=\dfrac{b}{\sqrt{a^2+b^2}}$ + +024614 +$\{\alpha|\alpha=2k\pi\text{或}\dfrac{2\pi}{3}+2k\pi, \ k\in \mathbf{Z}\}$ + +009570 +$\sin C=\dfrac{220}{221}$, $\cos C=-\dfrac{21}{221}$ + +009571 +$\sin(\alpha+\beta)=\dfrac{33}{65}$, $\cos(\alpha+\beta)=-\dfrac{56}{65}$, $\alpha+\beta$是第二象限角 + +009572 +(1) $\sqrt{2}\sin(\alpha+\dfrac{\pi}{4})$; (2) $2\sin(\alpha+\dfrac{2\pi}{3})$ + +018390 +$\dfrac{\sqrt{6}-\sqrt{2}}{4}$ + +018402 +证明略 + +018403 +证明略 + +018404 +证明略 + +009576 +证明略 + +009577 +证明略 + +009578 +证明略 + +018405 +证明略 + +040387 +$\dfrac{5\pi}{3}$ + +040388 +$-1$ + +040389 +$-\dfrac{\pi}{3}$或$\dfrac{4\pi}{3}$ + +040390 +$-3$ + +040391 +$-2$ + +040392 +$-\dfrac{\sqrt{23}}{4}$ + +ans + +041050 +$2\sqrt{7}$, $(0,\pm \sqrt{7})$ + +040971 +$2\sqrt{7}$, $(\pm \sqrt{7},0)$ + +041051 +D + +040972 +$x=0(-3 \leq y \leq 3)$ + +040973 +B + +040974 +$\dfrac{x^2}7+\dfrac{y^2}{16}=1$ + +040975 +B + +008878 +D + +008877 +A + +014470 +$4\sqrt{3}$ + +040976 +$\dfrac{x^2}{25}+\dfrac{y^2}{16}=1$或$\dfrac{x^2}7+\dfrac{y^2}{16}=1$ + +040977 +(1)$\dfrac{x^2}{100}+\dfrac{y^2}{64}=1$; +(2)$\dfrac{x^2}6+\dfrac{y^2}4=1$ + +040978 +(1)$k=7$;(2)$4\sqrt{3}$ + +040995 +(1)$y=-\sqrt12+\sqrt34$;(2)$x+4y=0$(点在已知椭圆内);(3)$x^2+x+2y^2=0$ + +040996 +$6\sqrt{5}$ + +021204 +$\dfrac{\sqrt{2}}{2}$ + +021205 +$2\sqrt{37}$,$2$ + +021206 +$\dfrac{x^2}{25}+\dfrac{y^2}{75}=1$ 021207 -20240226 2025届高二11班 0.913 FORCE -20240229 2025届高二11班 0.808 +$\dfrac{x^2}{12}+\dfrac{y^2}{9}=1$或$\dfrac{x^2}{9}+\dfrac{y^2}{12}=1$ -021207 -20240226 2025届高二01班 0.902 FORCE -20240229 2025届高二01班 0.951 +021208 +$[-\sqrt{34},\sqrt{34}]$ -021207 -20240226 2025届高二02班 0.977 FORCE -20240229 2025届高二02班 0.956 +021209 +$\dfrac{\pi}3$ -021207 -20240226 2025届高二03班 0.949 FORCE -20240229 2025届高二03班 0.974 +040997 +$b\sqrt{a^2-b^2}$ -021207 -20240226 2025届高二05班 0.895 FORCE -20240229 2025届高二05班 0.816 +040998 +$8\sqrt{3}$ -021207 -20240226 2025届高二07班 0.900 FORCE -20240229 2025届高二07班 0.911 +021212 +$P(-6,-4)$,$d=\dfrac{22}{\sqrt{73}}$ -021207 -20240226 2025届高二09班 0.941 FORCE -20240229 2025届高二09班 0.722 +021200 +$\dfrac{x^2}{4}+y^2=1$ +021201 +$-\dfrac{5\sqrt{7}}{4}0)$;(3)$x^2-\dfrac{y^2}{3}=1$ + +021223 +$\dfrac{x^2}{20}-\dfrac{y^2}{16}=1$ + +021224 +$\dfrac{x^2}{33-12\sqrt{6}}-\dfrac{y^2}{12\sqrt{6}-8}=1$或$\dfrac{y^2}{16}-\dfrac{x^2}{9}=1$ + +021225 +不正确, 正确结果为$17$ + +021226 +$\dfrac{x^2}{115600}-\dfrac{y^2}{134400}=1$ + +021227 +D + +021228 +$(-3,6)$ + +021229 +$m<-2$ + +021230 +$\dfrac{41}{4}$ + +021231 +$32+2m$ + +021232 +$|PF_1|=\dfrac{c}{a}x_0+a$,$|PF_2|=\dfrac{c}{a}x_0-a$ + +021233 +$x^2-\dfrac{y^2}{4}=1$ + +041001 +(1)$\dfrac{y^2}{18}-\dfrac{x^2}{18}=1$,$\sqrt{2}$;(2)$(\pm 2\sqrt{3},0)$,$\arctan{2\sqrt{2}}$ + +041002 +A,A,B,B + +041003 +(1))$\dfrac{x^2}{3}-\dfrac{y^2}{5}=1$;(2))$\dfrac{y^2}{81}-\dfrac{x^2}{9}=1$或)$x^2-\dfrac{y^2}{9}=1$ + +021242 +$\dfrac{x^2}{3}-\dfrac{y^2}{12}=1$ + +021243 +$y=\pm \dfrac{\sqrt{2}}{4}x$ + +021244 +证明略 + +041004 +(1)$\dfrac{x^2}{\dfrac{81}{13}}-\dfrac{y^2}{\dfrac{36}{13}}=1$;(2)$2$或$\dfrac{2\sqrt{3}}{3}$; (3)$(\dfrac 52,\dfrac 72)$;(4)$(\pm \sqrt{7},0)$ + +041005 +D,A,D + +021251 +$a^2$ + +021263 +$\dfrac{y^2}{36}-\dfrac{x^2}{81}=1(x\neq 0)$ + +021252 +$\dfrac{c}{a}$ + +021253 +$y=\pm \sqrt{2}x$ + +021254 +$0$ + +008917 +$\dfrac{x^2}{4}-\dfrac{y^2}{5}=1$(x>0) + +021255 +$\dfrac{2\sqrt{3}}{3}$ + +021256 +$\dfrac{14\sqrt{3}}{3}$ + +041006 +$3$ + +021258 +$x^2-4y^2=\pm \dfrac{36}{5}$ + +021259 +$(-\dfrac{\sqrt{15}}{3},-1)$ + +021260 +(1)椭圆:$k<4$,双曲线: $4\dfrac{\sqrt{6}}{2},e\neq \sqrt{2}$;(2)$\dfrac{17}{13}$ + +ans + +012360 +$\dfrac{\pi}{3}$ + +009305 +(1)$x^15$,$-15x^14$,$105x^13$,$-455x^12$\\ +(2)$-2099520a^9b^14$ + +009306 +(1)$\dfrac{105}{8}$;(2)$-252$ + +009309 +$120$ + +009308 +证明略 + +009317 +(1)第$18$,$19$项; \\ +(2)$\mathrm{C}_{35}^{27}3^{27}x^{27}$ + +009319 +证明略 + +021093 +(1)$\dfrac{1}{45}$;(2)$\dfrac{7}{10}$ + +022919 +(1)$\dfrac{1}{36}$;(2)$\dfrac{1}{18}$;(3)$\dfrac{5}{12}$ + +021095 +(1)$\dfrac{1}{68880}$;(2)$\dfrac{1}{11480}$ + +021096 +$\dfrac37$ + +021097 +$\dfrac{1}{12}$ + +021098 +$\dfrac{18}{25}$ + +021099 +$\dfrac{2}{5}$ + +021101 +$\dfrac{11}{12}$ + +021102 +$\dfrac{3439}{10000}$ + +021103 +$\dfrac{n!}{n^n}$ + +021104 +$\dfrac{1}{15}$ + +021105 +$\dfrac15$ + +021106 +(1)$\dfrac{11}{42}$;(2)$\dfrac{31}{42}$ + +021107 +(1)$\dfrac{1279}{1785}$;(2)$\dfrac{59049}{139075300}$ + +021108 +(1)$\{5,7,9\}$;(2)$\{0,2,4,5,6,7,8,9\}$;(3)$\emptyset$ + +021109 +B + +021110 +(1)$\{1,2,3,4\}$;(2)A + +021111 +(1)$\{1,2,3,4\}$;(2)A + +021112 +充分非必要 + +021113 +(1)$A\cup B$;(2)$A \cap \overline{B}$;(3)$(A \cap \overline{B}) \cup(\overline{A} \cap B) $ + +021114 +$B\subseteq \overline{A}$,$\overline{A}\cup \overline{B}=\omega$ + +021116 +(1)$\dfrac12$;(2)$\dfrac56$;(3)$\dfrac23$;(4)$\dfrac56$ + +021117 +(1)不是;(2)$0.94$ + +021125 +(1)$(A\cap B \cap \overline{C})\cup (A \cap \overline{B} \cap C)\cup (\overline{A} \cap B \cap C)\cup (A \cap B \cap C)$; +(2)$\overline{A\cap B \cap C }$; +(3)$(A\cap B \cap \overline{C})\cup (A \cap \overline{B} \cap C)\cup (\overline{A} \cap B \cap C)$ + +021118 +$\dfrac47$,$\dfrac27$,$\dfrac17$,$\dfrac67$,$\dfrac67$,$\dfrac57$ + +019932 +(1)$\dfrac34$;(2)$\dfrac1{13}$;(3)$\dfrac12$;(4)$\dfrac{51}{52}$ + +021119 +$\dfrac45$ + +021120 +$\dfrac35$ + +021121 +$\dfrac14$,$\dfrac16$,$\dfrac14$ + +021122 +$0.9$,$0.1$ + +018762 +证明略 + +021126 +大数定律 + +021127 +$\dfrac{73}{75}$ + +021128 +$\dfrac34$,$\dfrac{9}{44}$,$\dfrac{9}{220}$.$\dfrac{1}{220}$ + +021129 +(1)$0.46$;(2)$0.51$;(3)$0.97$ + +021130 +(1)$0.852$;(2)$25560$;(3)$5869$ + +021131 +(1)$0.1,0.06,0.025,0.02,0.02,0.02$;(2)$0.02$;(3)$40$ + +021132 +(1)$30\%$;(2)$53\%$;(3)$73\%$;(4)$14\%$;(5)$90\%$;(6)$10\%$; + +021133 +(1)$\dfrac13$;(2)$\dfrac14$ + +021134 +C + +021135 +(1)$\dfrac56$;(2)$\dfrac16$;(3)$\dfrac23$;(4)$\dfrac12$ + +021136 +(1)$0.995$;(2)$0.095$ + +021137 +(1)$7:1$;(2)$11:5$ + +021138 +$0.328$ + +021139 +$(\dfrac23,1)$ + +021140 +(1)$\dfrac38$,$\dfrac23$;(2)$\dfrac{21}{32}$ + +021141 +D + +021142 +D + +021143 +A + +021144 +A + +021145 +\textcircled{2} + +021146 +总体是$2487$万人的年龄, 样本是$24000$个常住居民的年龄, 样本量是$24000$ + +021147 +观测, 观测, 实验 + +021148 +不可靠, 样本容量太小, 样本不一定具有代表性 + +021149 +$2$ + +021150 +$122$ + +021151 +$a=b=10.5$ + +021152 +平均值是$17$,方差是$27$ + +021153 +平均数是$72.0$, 中位数是$70$, 方差是$74.9$ + +021154 +$\dfrac{n}{N}$ + +021155 +B + +021156 +20 + +021157 +C + +021158 +$4467$ + +021159 +(1)抽签法;(2)分层抽样 + +021160 +$49,04,40,36,16,08,06,55,33,69$ + +021161 +样本容量为$92$, 抽样人数为$31$ + +021162 +略 + +021163 +分层抽样, 高一抽$18$人, 高二抽$22$人, 高三抽$10$人 + +021164 +C + +021165 +$4$,$5.14$ + +021166 +$0.32$,$96$ + +021167 +$300$ + +021168 +集中, 分散, $6.88$,$12.43$ + +021169 +\begin{tabular}{c|ccccccc} +8 & 9 \\ +9 & 3 & 4 & 6 & 7 \\ +10 & 0 & 0 & 1 & 1 & 3 & 5 & 8\\ +11 & 0 & 2 +\end{tabular} + +021170 +略 + +021171 +略 + +021172 +D + +021173 +$35$ + +021174 +$12$ + +021177 +C + +021179 +\textcircled{1},\textcircled{2} + +021180 +A + +021175 +甲更准, 乙更稳定 + +021176 +(1)$3.47$,(2)$2773$ + +021178 +$100$ + +021181 +(1)$9.5$;(2)不能 + +021182 +平均成绩是$89.6$, 总体方差是$12.09$ + +023356 +$A\subset C\subset B \subset E \subset D \subset G$;$E \subset F \subset G$ + +023357 +全错 + +023358 +$\dfrac{72\sqrt{21}}7$ + +023359 +(1)$\dfrac16$;(2) + +023360 +$2\sqrt{15}$或$4\sqrt{6}$ + +023361 +略 + +023362 +$\frac{b^2-a^2}{\sqrt{a^2+b^2} \cdot \sqrt{a^2+b^2+c^2}}$. + +023363 +(1) $\frac{1}{2}$; (2) $\frac{\pi}{3}$. + +023364 +(1) 略; (2) $\arcsin{\frac{3\sqrt{2}}{10}}$; (3) $\frac{24\sqrt{41}}{41}$ + +023365 +略 + +023366 +$\sqrt{41}$ + +023367 +(1) 略; (2) $\frac{\pi}{4}$. + +023368 +$8\sqrt{3}$. + +003494 +(1) 略; (2) $3$; (3) $108\sqrt{3}$. + +023369 +(1) $48$; (2) $16\sqrt{3}+8\sqrt{21}+40$ + +023370 +(1) 略; (2) $\frac{1}{3}$; (3) $\frac{\sqrt{2}}{2}+\frac{\sqrt{6}}{2}$. + +023108 +C + +023109 +1; 4. + +023110 +8; 4. + +023111 +$M \in a$,$M \notin \alpha$. + +023112 +$\{1,4,6\}$. + +023113 +$D$. + +023114 +$C$. + +023115 +$A$. + +023116 +1个或者无数个 + +023117 +平行四边形 + +023118 +10 + +023119 +\textcircled{1}, \textcircled{2} ,\textcircled{4}, \textcircled{5}. + +023120 +$D$. + +012345 +$D$. + +023124 +$\frac{5(\sqrt{6}-1)}{2} $. + +023125 +$\sqrt{2}+2\sqrt{13}$. + +023126 +(1) F ; (2) F; (3) F; (4) T; (5) T; (6) T; (7) T; (8) F. + +023127 +(1) T ; (2) F; (3) F; (4) F; (5) F. + +023128 +异面或者平行. + +023129 +(1) 平行; (2) 异面. + +023130 +相交或者平行. + +023131 +充分不必要. + +023132 +4个. + +023133 +$45^{\circ}$; $30^{\circ}$或$60^{\circ}$. + +023134 +(1) $\frac{\pi}{3}$; (2) $\arccos \frac{\sqrt{10}}{10}$; (3) $\arccos \frac{\sqrt{10}}{5}$. + +023135 +\textcircled{1} \textcircled{4}. + +023136 +$\frac{a}{3}$. + +012345 +D + +023137 +B + +023140 +$\frac{\pi}{4}$或$\frac{\pi}{3}$. + +023141 +(1) 点 $P$ 在$C$点; (2) 点 $P$ 在距离$C$点$\frac{16}{5}$. + +023142 +$\frac{\sqrt{39}}{2}$. + +016740 +1. + +016731 +8. + +023143 +$\arctan\frac{1}{5}$或者$\arctan\frac{4}{5}$. + +023144 +$\arctan\frac{2\sqrt{5}}{5}$. + +017767 +2 + +023145 +$\sqrt{6}$. + +023146 +$\frac{\sqrt{3}}{3}$. + +023147 +$[ 30,90 ]$. + +023148 +(1) $\frac{\sqrt{15}}{5}$; (2) $\frac{\pi}{6}$. + +023149 +$\frac{\sqrt{3}}{2}$. + +023150 +$\frac{2}{3}$. + +023151 +(1) $\arctan \frac{\sqrt{5}}{5}$; (2) $\arccos \frac{\sqrt{30}}{10}$; (3) 在 $BC$ 边上存在一点 $G$, $BG$的值为1. + +023152 +(1) 略; (2) $\arcsin \frac{\sqrt{21}}{7}$; (3) 存在 $P$, 使得 $DE \parallel $ 平面 $BMP$, $\dfrac{AP}{DP}$ 的值3. + +031552 +$\frac{\sqrt{10}}{5}$ + +003489 +(1) $\arcsin \frac{\sqrt{6}}{3}$; (2) $\arcsin \frac{\sqrt{3}}{3}$; (3) $\frac{\pi}{4}$. + +023153 +(1) $\frac{\sqrt{6}}{3}$; (2) $\frac{\sqrt{6}}{6}$; (3) $\frac{\sqrt{6}}{6}$. + +003456 +$\frac{3\sqrt{5}}{5}$. + +003457 +$\frac{\pi}{3}$或$\frac{2\pi}{3}$. + +023154 +1或3. + +023155 +$\frac{\pi}{3}$. + +023156 +\textcircled{1}\textcircled{2}\textcircled{3}\textcircled{5}. + +023157 +B + +023158 +B + +023159 +A + +023160 +$\frac{\pi}{3}$. + +023161 +4.3 + +023162 +(1) 略; (2) $\frac{\sqrt{3}}{2}$; (3) $\arcsin \frac{2\sqrt{5}}{5}$. + +023163 +(1) $\frac{\pi}{2}$; (2) $\frac{\pi}{3}$. + +023164 +(1) 四边形 $MNDC$为矩形; (2) $\arctan \frac{\sqrt{2}}{2}$; (3) $\frac{\sqrt{2}}{2}$. + +023165 +(1) 异面直线 $D_1E$ 与 $A_1D$ 所成角的大小不会随点 $E$ 的移动而改变, 所成角为$\frac{\pi}{2}$; \\(2) 点 $E$距离点 $A$ 为$2-\sqrt{3}$, 二面角 $D_1-EC-D$ 的大小为 $\dfrac{\pi}{4}$; \\(3) 直线 $AD_1$ 平行于 平面 $B_1DE$. + +023166 +\textcircled{2}\textcircled{3} + +023167 +$75^{\circ}$ + +010502 +arctan$\frac{\sqrt{5}}{5}$ + +023168 +arccos$\frac{2}{3}$ + +023169 +$\frac{\pi}{4}$ + +023170 +$\sqrt{41}$或$13$ + +023171 +$6$或$1.5$ + +023172 +$30^{\circ}$ + +023173 +$3.5cm$ + +023174 +$\frac{\sqrt{2}}{2}$ + +023175 +B + +023176 +$A$ + +023177 +$D$ + +023178 +$(1)$略; $(2)\frac{\sqrt{14}}{14}$ + +023179 +$(1)\frac{\pi}{6};(2)arccos\frac{\sqrt{3}}{3}$ + +023180 +$(1)$略; $(2)arctan\frac{\sqrt{6}}{2}$;$(3)$略; $(4)\frac{\sqrt{2}}{6}$ + +023181 +无 + +011402 +A + +023182 +B. + +023183 +2. + +023184 +5. + +023185 +$\sqrt{29}$. + +023186 +$\frac{\pi}{6}$. + +023187 +$\frac{15\sqrt{3}}{2}$ + +017677 +$DM\perp PC$(或$BM\perp PC$) + +023188 +\textcircled{1}\textcircled{2}\textcircled{4} + +023189 +(1)略; (2)$arccos\frac{\sqrt{15}}{5}$ + +023190 +(1)略; (2)6. + +023191 +$S=\begin{cases}\frac{1}{2cos\alpha},\quad\alpha\in(0,arctan\sqrt{2}]\\ \frac{\sqrt{2}-cot\alpha}{sin\alpha},\alpha\in(arctan\sqrt{2},\frac{\pi}{2}]\end{cases}$ + +023192 +(1)略; (2)$\frac{2\sqrt{6}}{3}$. + +023193 +$8$. + +023194 +$arctan\frac{\sqrt{3}}{2}$. + +023195 +$64.$ + +023196 +$arctan\sqrt{2}$. + +023197 +$10.$ + +023198 +$(1)$外心; $(2)$内心; $(3)$垂心. + +023199 +$\sqrt{3}$ + +023200 +$48$. + +023201 +$\frac{6}{7}$. + +023202 +A. + +023203 +$S=32,V=16$. + +023204 +$\frac{2\sqrt{11}}{11}$. + +023205 +$(1)$略; $(2)\frac{5}{3}$. + +023206 +$(1)V=a^2;(2)$\textcircled{1}$\frac{\sqrt{51}}{9}$;\textcircled{2}$\frac{\sqrt{30}}{3}$. + +023207 +$\sqrt{29}$. + +023208 +$\frac{\sqrt{6}}{3}$. + +023209 +$arctan\frac{\sqrt{5}}{5}$. + +023210 +$arccos\frac{2}{3}$. + +023211 +$\frac{\pi}{6}$. + +023212 +$\frac{15\sqrt{3}}{2}$. + +023213 +$3\pi^2$或$\frac{9}{2}\pi^2$. + +023214 +$\frac{\sqrt{3}}{2}a$. + +023215 +$\pi$. + +023216 +$\sqrt{2}:1$. + +023217 +$1:4:9$. + +023218 +$\frac{8}{3}\pi$. + +023219 +$12:15:20$. + +023220 +$576$. + +023221 +$\theta_{min}=\pi-arctan\frac{4}{3}$,此时$P$ 在线段 $A_1C_1$ 的中点. + +023222 +略. + +023223 +$(1)$略; $(2)arctan\sqrt{2}$;$(3)$是, $\frac{\sqrt{6}}{24}$. + +023224 +$P^{6}_{20-m}$. + +023225 +$60$. + +023226 +$48$. + +023227 +$6$. + +023228 +$6$. + +023229 +$156$. + +023230 +$103$. + +023231 +$48$. + +023232 +$(\frac{2}{3},1)$. + +023233 +$a_{n}=\begin{cases}2-a,n=1 \\2^{n-1},n\geq2 + \end{cases}$. + +023234 +(1)$m=9$;(2)$k_{n}=3^{n+1}+2$. + +023235 +$(-\frac{1}{11},-\frac{1}{19})$. + +023236 +(1)略; (2)$S_{n}=\frac{2}{3}-(n+\frac{2}{3})(\frac{1}{4})^{n}$;(3)$(-\infty,-5]\cup[1,+\infty)$. + +023237 +$1716$. + +023238 +5或8. + +023239 +$x=15,y=5$. + +023240 +21. + +023241 +6. + +016908 +12. + +023242 +540. + +023243 +2880. + +023244 +200. + +023245 +$-1$. + +023246 +$2^{n-1},n\in \mathbf{N}$且$n\ge1$. + +023247 +$2^{n-1},n\in \mathbf{N}$且$n\ge1$. + +023248 +$7(\frac{1}{3})^{n-1}-6,n\in \mathbf{N}$且$n\ge1$. + +023249 +$765$. + +023250 +(1)58409520;(2)6275430;(3)64684945;(4)64682995. + +023251 +$92$. + +023256 +$\frac{3}{5}$ + +023257 +$\frac{3}{7}$ + +023258 +$\frac{1}{35}$ + +031430 +$\frac{14}{33}$ + +017716 +$\frac{3}{10}$ + +017041 +$\frac{3}{4}$ + +023259 +$\frac{2}{7}$ + +023260 +$\frac{2}{27}$ + +023261 +$\frac{9}{10}$ + +023262 +$-49$ + +023263 +$12$ + +023264 +$\frac{5}{6}$ + +023265 +(1) $d_1, d_2, d_3$ 的值分别为2,3,6;\\ +(2) 略; (3) 略. + +023266 +$0.54$ + +023267 +$\dfrac{5}{36}$; $\dfrac{5}{12}$ + +023268 +$\dfrac{3}{8}$; $\dfrac{7}{8}$ + +023269 +$0.88$ + +023270 +$0.9$ + +023271 +$7$或$8$ + +002651 +$7$ + +023272 +(1) F; (2) F; (3) T; (4) F. + +023273 +(1) $\dfrac{4}{15}$; (2) $\dfrac{11}{15}$ + +023274 +(1) $\dfrac{70}{323}$; (2) $\dfrac{728}{969}$; (3) $\dfrac{27}{128}$ + +023275 +(1) $\dfrac{211}{3456}$; (2) $\dfrac{7}{10}$; (3) $\dfrac{1}{15}$ + +023276 +(1) $c_n=2n-1$; (2) $S_n=1+(n-1)3^n$ + +023277 +$18$ + +023278 +B + +023279 +A + +023280 +C + +023281 +B + +023282 +C + +023283 +$55$ + +023284 +$50$; $1015$ + +023285 +$3$ + +023286 +$n=1$时, $a_n=5$; $n \geq 2$时, $a_n=2n-2$ + +023287 +$2^n+3$ + +023288 +$1049410$ + +023289 +$19$ + +023290 +(1) $0.5$; (2) $\frac{3}{16}$; (3) 略 + +023291 +(1) $\{a_n\}-3n+15$; (2) $T_n=\frac{1}{6}(\frac{3}{2}-\frac{1}{n+1}-\frac{1}{n+2})$ + +023292 +(1) $P_3=-2p^3+3p^2$; $P_4=4p^3-3p^4$; (2) 当$02.1$,可以达到 + +022869 +(1)$1$; (2)$(0,\arctan\dfrac{1}{2})$ + +022870 +(1)$6$; (2)正确, 证明略 \ No newline at end of file diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json index ee283551..73183500 100644 --- a/题库0.3/Problems.json +++ b/题库0.3/Problems.json @@ -85269,7 +85269,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "$7$", "solution": "", "duration": -1, "usages": [ @@ -109058,7 +109058,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{3\\sqrt{5}}{5}$.", "solution": "", "duration": -1, "usages": [], @@ -109081,7 +109081,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\pi}{3}$或$\\frac{2\\pi}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -109874,7 +109874,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "填空题", - "ans": "", + "ans": "(1) $\\arcsin \\frac{\\sqrt{6}}{3}$; (2) $\\arcsin \\frac{\\sqrt{3}}{3}$; (3) $\\frac{\\pi}{4}$.", "solution": "", "duration": -1, "usages": [], @@ -109989,7 +109989,7 @@ "H20250344-几何复习卷02" ], "genre": "解答题", - "ans": "", + "ans": "(1) 略; (2) $3$; (3) $108\\sqrt{3}$.", "solution": "", "duration": -1, "usages": [], @@ -140606,7 +140606,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1) $1$;(2)$2$", "solution": "", "duration": -1, "usages": [ @@ -140808,7 +140808,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{2}$", "solution": "", "duration": -1, "usages": [ @@ -141078,7 +141078,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$(-\\infty,-1]$", "solution": "", "duration": -1, "usages": [ @@ -141163,7 +141163,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -141243,7 +141243,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "解答题", - "ans": "", + "ans": "(1)$T=\\pi $;严格增区间为$[k\\pi-\\dfrac{\\pi}{3},k\\pi+\\dfrac{\\pi}{6}],k\\in\\mathbf{Z}$;(2)$3\\sqrt{3}$", "solution": "", "duration": -1, "usages": [ @@ -142242,7 +142242,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$15$", "solution": "", "duration": -1, "usages": [ @@ -253402,7 +253402,7 @@ "F20240516-基础赋能卷08B" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [ @@ -253437,7 +253437,7 @@ "椭圆" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [ @@ -253554,7 +253554,7 @@ "椭圆" ], "genre": "填空题", - "ans": "", + "ans": "$(0,\\pm5)$", "solution": "", "duration": -1, "usages": [ @@ -253589,7 +253589,7 @@ "椭圆" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [ @@ -253815,7 +253815,7 @@ "椭圆" ], "genre": "解答题", - "ans": "", + "ans": "(1)$15$,$5$;(2)$(\\dfrac{25}4,\\pm \\dfrac{3\\sqrt{39}}{4})$", "solution": "", "duration": -1, "usages": [ @@ -253851,7 +253851,7 @@ "椭圆" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{x^2}9+\\dfrac{y^2}{16}=1$", "solution": "", "duration": -1, "usages": [ @@ -253971,7 +253971,7 @@ "椭圆" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [ @@ -254056,7 +254056,7 @@ "圆" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{x^2}{16}+\\dfrac{y^2}{7}=1$", "solution": "", "duration": -1, "usages": [ @@ -254669,7 +254669,7 @@ "圆" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{x^2}{4}-\\dfrac{y^2}{5}=1$(x>0)", "solution": "", "duration": -1, "usages": [], @@ -265717,7 +265717,7 @@ "H20250330-二项式定理(1)" ], "genre": "解答题", - "ans": "", + "ans": "(1)$x^15$,$-15x^14$,$105x^13$,$-455x^12$\\\\\n(2)$-2099520a^9b^14$", "solution": "", "duration": -1, "usages": [ @@ -265753,7 +265753,7 @@ "H20250330-二项式定理(1)" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac{105}{8}$;(2)$-252$", "solution": "", "duration": -1, "usages": [ @@ -265814,7 +265814,7 @@ "H20250331-二项式定理(2)" ], "genre": "解答题", - "ans": "", + "ans": "证明略", "solution": "", "duration": -1, "usages": [ @@ -265850,7 +265850,7 @@ "H20250330-二项式定理(1)" ], "genre": "解答题", - "ans": "", + "ans": "$120$", "solution": "", "duration": -1, "usages": [ @@ -266111,7 +266111,7 @@ "H20250331-二项式定理(2)" ], "genre": "解答题", - "ans": "", + "ans": "(1)第$18$,$19$项; \\\\\n(2)$\\mathrm{C}_{35}^{27}3^{27}x^{27}$", "solution": "", "duration": -1, "usages": [ @@ -266194,7 +266194,7 @@ "H20250331-二项式定理(2)" ], "genre": "解答题", - "ans": "", + "ans": "证明略", "solution": "", "duration": -1, "usages": [ @@ -298232,7 +298232,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "arctan$\\frac{\\sqrt{5}}{5}$", "solution": "", "duration": -1, "usages": [], @@ -324029,7 +324029,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [], @@ -351253,7 +351253,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [], @@ -351603,7 +351603,7 @@ "E20250301-2025届高二上学期测验卷01" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{\\pi}{3}$", "solution": "", "duration": -1, "usages": [], @@ -410357,7 +410357,7 @@ "W20250315-2025届高二上学期周末卷15" ], "genre": "填空题", - "ans": "", + "ans": "$13$", "solution": "", "duration": -1, "usages": [], @@ -411734,7 +411734,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$4\\sqrt{3}$", "solution": "", "duration": -1, "usages": [ @@ -468556,7 +468556,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "8.", "solution": "", "duration": -1, "usages": [], @@ -468761,7 +468761,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "1.", "solution": "", "duration": -1, "usages": [], @@ -472569,7 +472569,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "12.", "solution": "", "duration": -1, "usages": [], @@ -475576,7 +475576,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{3}{4}$", "solution": "", "duration": -1, "usages": [], @@ -479317,7 +479317,7 @@ "W20250314-2025届高二上学期周末卷14" ], "genre": "填空题", - "ans": "", + "ans": "$0.98$", "solution": "", "duration": -1, "usages": [], @@ -490412,7 +490412,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "$DM\\perp PC$(或$BM\\perp PC$)", "solution": "", "duration": -1, "usages": [], @@ -491274,7 +491274,7 @@ "E20240503-2024届高三上学期测验卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{3}{10}$", "solution": "", "duration": -1, "usages": [ @@ -492423,7 +492423,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "2", "solution": "", "duration": -1, "usages": [], @@ -515311,7 +515311,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "证明略", "solution": "", "duration": -1, "usages": [ @@ -542470,7 +542470,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "$\\dfrac{\\sqrt{3}}3\\pi$", + "ans": "$2\\pi$", "solution": "", "duration": -1, "usages": [ @@ -544191,7 +544191,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac34$;(2)$\\dfrac1{13}$;(3)$\\dfrac12$;(4)$\\dfrac{51}{52}$", "solution": "", "duration": -1, "usages": [ @@ -581901,7 +581901,7 @@ "H20250332-等可能性与概率" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac{1}{45}$;(2)$\\dfrac{7}{10}$", "solution": "", "duration": -1, "usages": [ @@ -581980,7 +581980,7 @@ "H20250332-等可能性与概率" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac{1}{68880}$;(2)$\\dfrac{1}{11480}$", "solution": "", "duration": -1, "usages": [ @@ -582025,7 +582025,7 @@ "H20250332-等可能性与概率" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac37$", "solution": "", "duration": -1, "usages": [ @@ -582082,7 +582082,7 @@ "H20250332-等可能性与概率" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{1}{12}$", "solution": "", "duration": -1, "usages": [ @@ -582128,7 +582128,7 @@ "H20250332-等可能性与概率" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{18}{25}$", "solution": "", "duration": -1, "usages": [ @@ -582169,7 +582169,7 @@ "H20250332-等可能性与概率" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{2}{5}$", "solution": "", "duration": -1, "usages": [ @@ -582248,7 +582248,7 @@ "H20250333-等可能性与概率(续)" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{11}{12}$", "solution": "", "duration": -1, "usages": [ @@ -582315,7 +582315,7 @@ "H20250333-等可能性与概率(续)" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{3439}{10000}$", "solution": "", "duration": -1, "usages": [ @@ -582380,7 +582380,7 @@ "H20250333-等可能性与概率(续)" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{n!}{n^n}$", "solution": "", "duration": -1, "usages": [ @@ -582423,7 +582423,7 @@ "H20250333-等可能性与概率(续)" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{1}{15}$", "solution": "", "duration": -1, "usages": [ @@ -582468,7 +582468,7 @@ "H20250333-等可能性与概率(续)" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac15$", "solution": "", "duration": -1, "usages": [ @@ -582514,7 +582514,7 @@ "H20250333-等可能性与概率(续)" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac{11}{42}$;(2)$\\dfrac{31}{42}$", "solution": "", "duration": -1, "usages": [ @@ -582557,7 +582557,7 @@ "H20250333-等可能性与概率(续)" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac{1279}{1785}$;(2)$\\dfrac{59049}{139075300}$", "solution": "", "duration": -1, "usages": [ @@ -582600,7 +582600,7 @@ "H20250334-事件关系和运算" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\{5,7,9\\}$;(2)$\\{0,2,4,5,6,7,8,9\\}$;(3)$\\emptyset$", "solution": "", "duration": -1, "usages": [ @@ -582644,7 +582644,7 @@ "H20250334-事件关系和运算" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [ @@ -582693,7 +582693,7 @@ "H20250334-事件关系和运算" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\{1,2,3,4\\}$;(2)A", "solution": "", "duration": -1, "usages": [ @@ -582735,7 +582735,7 @@ "H20250334-事件关系和运算" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\{1,2,3,4\\}$;(2)A", "solution": "", "duration": -1, "usages": [ @@ -582778,7 +582778,7 @@ "H20250334-事件关系和运算" ], "genre": "解答题", - "ans": "", + "ans": "充分非必要", "solution": "", "duration": -1, "usages": [ @@ -582822,7 +582822,7 @@ "H20250334-事件关系和运算" ], "genre": "解答题", - "ans": "", + "ans": "(1)$A\\cup B$;(2)$A \\cap \\overline{B}$;(3)$(A \\cap \\overline{B}) \\cup(\\overline{A} \\cap B) $", "solution": "", "duration": -1, "usages": [ @@ -582866,7 +582866,7 @@ "H20250334-事件关系和运算" ], "genre": "解答题", - "ans": "", + "ans": "$B\\subseteq \\overline{A}$,$\\overline{A}\\cup \\overline{B}=\\omega$", "solution": "", "duration": -1, "usages": [ @@ -582951,7 +582951,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac12$;(2)$\\dfrac56$;(3)$\\dfrac23$;(4)$\\dfrac56$", "solution": "", "duration": -1, "usages": [ @@ -582991,7 +582991,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "(1)不是;(2)$0.94$", "solution": "", "duration": -1, "usages": [ @@ -583031,7 +583031,7 @@ "H20250335-可加性" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac47$,$\\dfrac27$,$\\dfrac17$,$\\dfrac67$,$\\dfrac67$,$\\dfrac57$", "solution": "", "duration": -1, "usages": [ @@ -583071,7 +583071,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac45$", "solution": "", "duration": -1, "usages": [ @@ -583113,7 +583113,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac35$", "solution": "", "duration": -1, "usages": [ @@ -583169,7 +583169,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac14$,$\\dfrac16$,$\\dfrac14$", "solution": "", "duration": -1, "usages": [ @@ -583209,7 +583209,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "$0.9$,$0.1$", "solution": "", "duration": -1, "usages": [ @@ -583313,7 +583313,7 @@ "H20250335-可加性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$(A\\cap B \\cap \\overline{C})\\cup (A \\cap \\overline{B} \\cap C)\\cup (\\overline{A} \\cap B \\cap C)\\cup (A \\cap B \\cap C)$;\n(2)$\\overline{A\\cap B \\cap C }$;\n(3)$(A\\cap B \\cap \\overline{C})\\cup (A \\cap \\overline{B} \\cap C)\\cup (\\overline{A} \\cap B \\cap C)$", "solution": "", "duration": -1, "usages": [ @@ -583353,7 +583353,7 @@ "H20250336-频率与概率" ], "genre": "解答题", - "ans": "", + "ans": "大数定律", "solution": "", "duration": -1, "usages": [ @@ -583397,7 +583397,7 @@ "H20250336-频率与概率" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{73}{75}$", "solution": "", "duration": -1, "usages": [ @@ -583452,7 +583452,7 @@ "H20250336-频率与概率" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac34$,$\\dfrac{9}{44}$,$\\dfrac{9}{220}$.$\\dfrac{1}{220}$", "solution": "", "duration": -1, "usages": [ @@ -583496,7 +583496,7 @@ "H20250336-频率与概率" ], "genre": "解答题", - "ans": "", + "ans": "(1)$0.46$;(2)$0.51$;(3)$0.97$", "solution": "", "duration": -1, "usages": [ @@ -583538,7 +583538,7 @@ "H20250336-频率与概率" ], "genre": "解答题", - "ans": "", + "ans": "(1)$0.852$;(2)$25560$;(3)$5869$", "solution": "", "duration": -1, "usages": [ @@ -583580,7 +583580,7 @@ "H20250336-频率与概率" ], "genre": "解答题", - "ans": "", + "ans": "(1)$0.1,0.06,0.025,0.02,0.02,0.02$;(2)$0.02$;(3)$40$", "solution": "", "duration": -1, "usages": [ @@ -583622,7 +583622,7 @@ "H20250336-频率与概率" ], "genre": "解答题", - "ans": "", + "ans": "(1)$30\\%$;(2)$53\\%$;(3)$73\\%$;(4)$14\\%$;(5)$90\\%$;(6)$10\\%$;", "solution": "", "duration": -1, "usages": [ @@ -583664,7 +583664,7 @@ "H20250337-随机事件的独立性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac13$;(2)$\\dfrac14$", "solution": "", "duration": -1, "usages": [ @@ -583704,7 +583704,7 @@ "H20250337-随机事件的独立性" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -583750,7 +583750,7 @@ "H20250337-随机事件的独立性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac56$;(2)$\\dfrac16$;(3)$\\dfrac23$;(4)$\\dfrac12$", "solution": "", "duration": -1, "usages": [ @@ -583790,7 +583790,7 @@ "H20250337-随机事件的独立性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$0.995$;(2)$0.095$", "solution": "", "duration": -1, "usages": [ @@ -583834,7 +583834,7 @@ "H20250337-随机事件的独立性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$7:1$;(2)$11:5$", "solution": "", "duration": -1, "usages": [ @@ -583874,7 +583874,7 @@ "H20250337-随机事件的独立性" ], "genre": "解答题", - "ans": "", + "ans": "$0.328$", "solution": "", "duration": -1, "usages": [ @@ -583914,7 +583914,7 @@ "H20250337-随机事件的独立性" ], "genre": "解答题", - "ans": "", + "ans": "$(\\dfrac23,1)$", "solution": "", "duration": -1, "usages": [ @@ -583954,7 +583954,7 @@ "H20250337-随机事件的独立性" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac38$,$\\dfrac23$;(2)$\\dfrac{21}{32}$", "solution": "", "duration": -1, "usages": [ @@ -583994,7 +583994,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [ @@ -584025,7 +584025,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [ @@ -584056,7 +584056,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [ @@ -584087,7 +584087,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [ @@ -584120,7 +584120,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "填空题", - "ans": "", + "ans": "\\textcircled{2}", "solution": "", "duration": -1, "usages": [ @@ -584156,7 +584156,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "解答题", - "ans": "", + "ans": "总体是$2487$万人的年龄, 样本是$24000$个常住居民的年龄, 样本量是$24000$", "solution": "", "duration": -1, "usages": [ @@ -584192,7 +584192,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "填空题", - "ans": "", + "ans": "观测, 观测, 实验", "solution": "", "duration": -1, "usages": [ @@ -584228,7 +584228,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "解答题", - "ans": "", + "ans": "不可靠, 样本容量太小, 样本不一定具有代表性", "solution": "", "duration": -1, "usages": [ @@ -584264,7 +584264,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "填空题", - "ans": "", + "ans": "$2$", "solution": "", "duration": -1, "usages": [ @@ -584300,7 +584300,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "填空题", - "ans": "", + "ans": "$122$", "solution": "", "duration": -1, "usages": [ @@ -584336,7 +584336,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "填空题", - "ans": "", + "ans": "$a=b=10.5$", "solution": "", "duration": -1, "usages": [ @@ -584374,7 +584374,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "解答题", - "ans": "", + "ans": "平均值是$17$,方差是$27$", "solution": "", "duration": -1, "usages": [ @@ -584410,7 +584410,7 @@ "H20250338-总体与样本、数据的获取" ], "genre": "解答题", - "ans": "", + "ans": "平均数是$72.0$, 中位数是$70$, 方差是$74.9$", "solution": "", "duration": -1, "usages": [ @@ -584446,7 +584446,7 @@ "H20250339-抽样方法" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{n}{N}$", "solution": "", "duration": -1, "usages": [ @@ -584483,7 +584483,7 @@ "H20250339-抽样方法" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [ @@ -584516,7 +584516,7 @@ "H20250339-抽样方法" ], "genre": "填空题", - "ans": "", + "ans": "20", "solution": "", "duration": -1, "usages": [ @@ -584553,7 +584553,7 @@ "H20250339-抽样方法" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -584582,7 +584582,7 @@ "H20250339-抽样方法" ], "genre": "填空题", - "ans": "", + "ans": "$4467$", "solution": "", "duration": -1, "usages": [ @@ -584619,7 +584619,7 @@ "H20250339-抽样方法" ], "genre": "解答题", - "ans": "", + "ans": "(1)抽签法;(2)分层抽样", "solution": "", "duration": -1, "usages": [ @@ -584656,7 +584656,7 @@ "H20250339-抽样方法" ], "genre": "解答题", - "ans": "", + "ans": "$49,04,40,36,16,08,06,55,33,69$", "solution": "", "duration": -1, "usages": [ @@ -584693,7 +584693,7 @@ "H20250339-抽样方法" ], "genre": "解答题", - "ans": "", + "ans": "样本容量为$92$, 抽样人数为$31$", "solution": "", "duration": -1, "usages": [ @@ -584730,7 +584730,7 @@ "H20250339-抽样方法" ], "genre": "解答题", - "ans": "", + "ans": "略", "solution": "", "duration": -1, "usages": [ @@ -584769,7 +584769,7 @@ "H20250339-抽样方法" ], "genre": "解答题", - "ans": "", + "ans": "分层抽样, 高一抽$18$人, 高二抽$22$人, 高三抽$10$人", "solution": "", "duration": -1, "usages": [ @@ -584808,7 +584808,7 @@ "H20250340-统计图表" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -584836,7 +584836,7 @@ "H20250340-统计图表" ], "genre": "填空题", - "ans": "", + "ans": "$4$,$5.14$", "solution": "", "duration": -1, "usages": [ @@ -584873,7 +584873,7 @@ "H20250340-统计图表" ], "genre": "填空题", - "ans": "", + "ans": "$0.32$,$96$", "solution": "", "duration": -1, "usages": [ @@ -584908,7 +584908,7 @@ "H20250340-统计图表" ], "genre": "填空题", - "ans": "", + "ans": "$300$", "solution": "", "duration": -1, "usages": [ @@ -584943,7 +584943,7 @@ "H20250340-统计图表" ], "genre": "填空题", - "ans": "", + "ans": "集中, 分散, $6.88$,$12.43$", "solution": "", "duration": -1, "usages": [ @@ -584978,7 +584978,7 @@ "H20250340-统计图表" ], "genre": "解答题", - "ans": "", + "ans": "\\begin{tabular}{c|ccccccc}\n8 & 9 \\\\\n9 & 3 & 4 & 6 & 7 \\\\\n10 & 0 & 0 & 1 & 1 & 3 & 5 & 8\\\\\n11 & 0 & 2\n\\end{tabular}", "solution": "", "duration": -1, "usages": [ @@ -585013,7 +585013,7 @@ "H20250340-统计图表" ], "genre": "解答题", - "ans": "", + "ans": "略", "solution": "", "duration": -1, "usages": [ @@ -585048,7 +585048,7 @@ "H20250340-统计图表" ], "genre": "解答题", - "ans": "", + "ans": "略", "solution": "", "duration": -1, "usages": [ @@ -585083,7 +585083,7 @@ "H20250341-统计估计" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [ @@ -585112,7 +585112,7 @@ "H20250341-统计估计" ], "genre": "填空题", - "ans": "", + "ans": "$35$", "solution": "", "duration": -1, "usages": [ @@ -585145,7 +585145,7 @@ "H20250341-统计估计" ], "genre": "填空题", - "ans": "", + "ans": "$12$", "solution": "", "duration": -1, "usages": [ @@ -585180,7 +585180,7 @@ "H20250341-统计估计" ], "genre": "解答题", - "ans": "", + "ans": "甲更准, 乙更稳定", "solution": "", "duration": -1, "usages": [ @@ -585213,7 +585213,7 @@ "H20250341-统计估计" ], "genre": "解答题", - "ans": "", + "ans": "(1)$3.47$,(2)$2773$", "solution": "", "duration": -1, "usages": [ @@ -585246,7 +585246,7 @@ "H20250341-统计估计" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -585277,7 +585277,7 @@ "H20250341-统计估计" ], "genre": "解答题", - "ans": "", + "ans": "$100$", "solution": "", "duration": -1, "usages": [ @@ -585310,7 +585310,7 @@ "H20250341-统计估计" ], "genre": "填空题", - "ans": "", + "ans": "\\textcircled{1},\\textcircled{2}", "solution": "", "duration": -1, "usages": [ @@ -585343,7 +585343,7 @@ "H20250341-统计估计" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [ @@ -585374,7 +585374,7 @@ "H20250341-统计估计" ], "genre": "解答题", - "ans": "", + "ans": "(1)$9.5$;(2)不能", "solution": "", "duration": -1, "usages": [ @@ -585407,7 +585407,7 @@ "H20250341-统计估计" ], "genre": "解答题", - "ans": "", + "ans": "平均成绩是$89.6$, 总体方差是$12.09$", "solution": "", "duration": -1, "usages": [ @@ -585439,7 +585439,7 @@ "第七单元" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -585471,7 +585471,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$(-\\sqrt{3},\\sqrt{3})$", "solution": "", "duration": -1, "usages": [ @@ -585503,7 +585503,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$[\\sqrt{2},\\sqrt{3})$", "solution": "", "duration": -1, "usages": [ @@ -585535,7 +585535,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$[1,5)\\cup(5,+infty)$", "solution": "", "duration": -1, "usages": [ @@ -585588,7 +585588,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{2}-1$", "solution": "", "duration": -1, "usages": [ @@ -585620,7 +585620,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$(x-3)^2+(y-4)^2=4$", "solution": "", "duration": -1, "usages": [ @@ -585677,7 +585677,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$(-\\sqrt95,\\sqrt15)$", "solution": "", "duration": -1, "usages": [ @@ -585713,7 +585713,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$k<-\\sqrt{3}$或$k>\\sqrt{3}$", "solution": "", "duration": -1, "usages": [ @@ -585811,7 +585811,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$20$", "solution": "", "duration": -1, "usages": [ @@ -585843,7 +585843,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{x^2}{15}+\\dfrac{y^2}{10}=1$", "solution": "", "duration": -1, "usages": [ @@ -585875,7 +585875,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$x\\pm2\\sqrt{6}y-5=0$", "solution": "", "duration": -1, "usages": [ @@ -585907,7 +585907,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$4x+9y-13=0$", "solution": "", "duration": -1, "usages": [ @@ -585963,7 +585963,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{x^2}{4}+y^2=1$", "solution": "", "duration": -1, "usages": [ @@ -585997,7 +585997,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$-\\dfrac{5\\sqrt{7}}{4}0)$;(3)$x^2-\\dfrac{y^2}{3}=1$", "solution": "", "duration": -1, "usages": [ @@ -586593,7 +586593,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{x^2}{20}-\\dfrac{y^2}{16}=1$", "solution": "", "duration": -1, "usages": [ @@ -586620,7 +586620,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{x^2}{33-12\\sqrt{6}}-\\dfrac{y^2}{12\\sqrt{6}-8}=1$或$\\dfrac{y^2}{16}-\\dfrac{x^2}{9}=1$", "solution": "", "duration": -1, "usages": [ @@ -586645,7 +586645,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "不正确, 正确结果为$17$", "solution": "", "duration": -1, "usages": [ @@ -586670,7 +586670,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{x^2}{115600}-\\dfrac{y^2}{134400}=1$", "solution": "", "duration": -1, "usages": [], @@ -586692,7 +586692,7 @@ "第七单元" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [], @@ -586714,7 +586714,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$(-3,6)$", "solution": "", "duration": -1, "usages": [], @@ -586736,7 +586736,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$m<-2$", "solution": "", "duration": -1, "usages": [], @@ -586761,7 +586761,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{41}{4}$", "solution": "", "duration": -1, "usages": [], @@ -586785,7 +586785,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$32+2m$", "solution": "", "duration": -1, "usages": [], @@ -586809,7 +586809,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$|PF_1|=\\dfrac{c}{a}x_0+a$,$|PF_2|=\\dfrac{c}{a}x_0-a$", "solution": "", "duration": -1, "usages": [], @@ -586831,7 +586831,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$x^2-\\dfrac{y^2}{4}=1$", "solution": "", "duration": -1, "usages": [], @@ -587107,7 +587107,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{x^2}{3}-\\dfrac{y^2}{12}=1$", "solution": "", "duration": -1, "usages": [], @@ -587131,7 +587131,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$y=\\pm \\dfrac{\\sqrt{2}}{4}x$", "solution": "", "duration": -1, "usages": [], @@ -587155,7 +587155,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "证明略", "solution": "", "duration": -1, "usages": [], @@ -587314,7 +587314,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$a^2$", "solution": "", "duration": -1, "usages": [], @@ -587336,7 +587336,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$\\dfrac{c}{a}$", "solution": "", "duration": -1, "usages": [], @@ -587358,7 +587358,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$y=\\pm \\sqrt{2}x$", "solution": "", "duration": -1, "usages": [], @@ -587380,7 +587380,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$0$", "solution": "", "duration": -1, "usages": [], @@ -587402,7 +587402,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{2\\sqrt{3}}{3}$", "solution": "", "duration": -1, "usages": [], @@ -587424,7 +587424,7 @@ "第七单元" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{14\\sqrt{3}}{3}$", "solution": "", "duration": -1, "usages": [], @@ -587470,7 +587470,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$x^2-4y^2=\\pm \\dfrac{36}{5}$", "solution": "", "duration": -1, "usages": [], @@ -587492,7 +587492,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "$(-\\dfrac{\\sqrt{15}}{3},-1)$", "solution": "", "duration": -1, "usages": [], @@ -587514,7 +587514,7 @@ "第七单元" ], "genre": "解答题", - "ans": "", + "ans": "(1)椭圆:$k<4$,双曲线: $4\\dfrac{\\sqrt{6}}{2},e\\neq \\sqrt{2}$;(2)$\\dfrac{17}{13}$", "solution": "", "duration": -1, "usages": [], @@ -635689,7 +635689,7 @@ "A20240501-2024届高三上124分守护卷01" ], "genre": "解答题", - "ans": "(1) $\\dfrac{\\pi}{4}$; (2) $4-\\sqrt{2}$", + "ans": "$(1)\\dfrac{\\pi}{4});(2)4-\\sqrt{2}$", "solution": "", "duration": -1, "usages": [ @@ -635900,7 +635900,7 @@ "A20240502-2024届高三上124分守护卷02" ], "genre": "解答题", - "ans": "(1)7小时;(2)17小时", + "ans": "(1)7小时; (2)17小时", "solution": "", "duration": -1, "usages": [ @@ -635983,7 +635983,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{2}$", "solution": "", "duration": -1, "usages": [ @@ -636022,7 +636022,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "3", "solution": "", "duration": -1, "usages": [ @@ -636060,7 +636060,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "$1+\\ln x$", "solution": "", "duration": -1, "usages": [ @@ -636096,7 +636096,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{5}\\pi$", "solution": "", "duration": -1, "usages": [ @@ -636135,7 +636135,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "0", "solution": "", "duration": -1, "usages": [ @@ -636181,7 +636181,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "80", "solution": "", "duration": -1, "usages": [ @@ -636219,7 +636219,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "$-\\dfrac{1}{4}$", "solution": "", "duration": -1, "usages": [ @@ -636255,7 +636255,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{y^2}{9}-\\dfrac{x^2}{1}=1$", "solution": "", "duration": -1, "usages": [ @@ -636291,7 +636291,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{9}{20}$", "solution": "", "duration": -1, "usages": [ @@ -636330,7 +636330,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "8", "solution": "", "duration": -1, "usages": [ @@ -636366,7 +636366,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{\\sqrt{5}}{2}$", "solution": "", "duration": -1, "usages": [ @@ -636405,7 +636405,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "选择题", - "ans": "", + "ans": "D", "solution": "", "duration": -1, "usages": [ @@ -636445,7 +636445,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [ @@ -636483,7 +636483,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -636519,7 +636519,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\dfrac{16}{3}$;(2) $\\arcsin\\dfrac{2\\sqrt{2}}{3}$", "solution": "", "duration": -1, "usages": [ @@ -636557,7 +636557,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1)$3.1$秒; (2)20米/秒, 72千米/小时", "solution": "", "duration": -1, "usages": [ @@ -636593,7 +636593,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac{8}{3}$;(2)略", "solution": "", "duration": -1, "usages": [ @@ -636629,7 +636629,7 @@ "A20240503-2024届高三上124分守护卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1)$a_1=1;a_2=0$或$1$; $a_3=0$或$1$;(2)115,证明略", "solution": "", "duration": -1, "usages": [ @@ -636665,7 +636665,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\{1,2\\}$", "solution": "", "duration": -1, "usages": [], @@ -636691,7 +636691,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{\\pi}{3}$", "solution": "", "duration": -1, "usages": [ @@ -636730,7 +636730,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{\\pi}{3}$", "solution": "", "duration": -1, "usages": [ @@ -636767,7 +636767,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$-2$", "solution": "", "duration": -1, "usages": [ @@ -636803,7 +636803,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$512$", "solution": "", "duration": -1, "usages": [], @@ -636829,7 +636829,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{2\\pi}{3}$", "solution": "", "duration": -1, "usages": [ @@ -636866,7 +636866,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$-3$", "solution": "", "duration": -1, "usages": [ @@ -636902,7 +636902,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{x^2}{9}-\\dfrac{y^2}{16}=1$", "solution": "", "duration": -1, "usages": [], @@ -636925,7 +636925,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$(0,\\dfrac{1}{3})\\bigcup (\\dfrac{1}{3},\\dfrac{2}{3})$", "solution": "", "duration": -1, "usages": [], @@ -636951,7 +636951,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$2:-1:1:1$", "solution": "", "duration": -1, "usages": [], @@ -636975,7 +636975,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{\\sqrt{3}}{2}$", "solution": "", "duration": -1, "usages": [ @@ -637012,7 +637012,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [], @@ -637038,7 +637038,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [ @@ -637074,7 +637074,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [], @@ -637097,7 +637097,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1)12;(2)略", "solution": "", "duration": -1, "usages": [], @@ -637121,7 +637121,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1)$AB=\\sqrt{2}$米,$BC=\\dfrac{\\sqrt{2}}{2}$米,面积最大为$1$平方米; (2)$AB=2\\sqrt{2}$米,$BC=\\dfrac{\\sqrt{2}}{2}$米,面积最大为$2$平方米", "solution": "", "duration": -1, "usages": [], @@ -637147,7 +637147,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1)$2020$;(2)$(-\\infty,\\log_2\\dfrac{9}{10}]$", "solution": "", "duration": -1, "usages": [ @@ -637183,7 +637183,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1)证明略; (2)关于直线$y=x$对称, $x$范围为$[-1,+\\infty)$,$y$范围为$[-1,+\\infty)$,证明略", "solution": "", "duration": -1, "usages": [], @@ -637207,7 +637207,7 @@ "A20240504-2024届高三上124分守护卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1)例: $f(x)=\\sin\\dfrac{\\pi x}{4}$,证明略; (2)证明略", "solution": "", "duration": -1, "usages": [], @@ -637232,7 +637232,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$(0,2)$", "solution": "", "duration": -1, "usages": [ @@ -637260,7 +637260,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$(x+\\dfrac{3}{2})^2+y^2=9$", "solution": "", "duration": -1, "usages": [ @@ -637288,7 +637288,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$2n+1$", "solution": "", "duration": -1, "usages": [ @@ -637315,7 +637315,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$0.25$", "solution": "", "duration": -1, "usages": [ @@ -637345,7 +637345,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$3\\sqrt{3}$", "solution": "", "duration": -1, "usages": [ @@ -637371,7 +637371,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "填空题", - "ans": "", + "ans": "$[0,\\dfrac{\\sqrt{3}}{3}]$", "solution": "", "duration": -1, "usages": [ @@ -637398,7 +637398,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [ @@ -637425,7 +637425,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [ @@ -637463,7 +637463,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "解答题", - "ans": "", + "ans": "(1)证明略; (2)$ED=\\dfrac{\\sqrt{6}}{3}a$", "solution": "", "duration": -1, "usages": [ @@ -637489,7 +637489,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "解答题", - "ans": "", + "ans": "(1)15户; (2)$x=5$时, $f(x)$最大值为$2.12>2.1$,可以达到", "solution": "", "duration": -1, "usages": [ @@ -637515,7 +637515,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "解答题", - "ans": "", + "ans": "(1)$1$; (2)$(0,\\arctan\\dfrac{1}{2})$", "solution": "", "duration": -1, "usages": [ @@ -637543,7 +637543,7 @@ "A20240505-2024届高三上124分守护卷05" ], "genre": "解答题", - "ans": "", + "ans": "(1)$6$; (2)正确, 证明略", "solution": "", "duration": -1, "usages": [ @@ -639204,7 +639204,7 @@ "H20250332-等可能性与概率" ], "genre": "解答题", - "ans": "", + "ans": "(1)$\\dfrac{1}{36}$;(2)$\\dfrac{1}{18}$;(3)$\\dfrac{5}{12}$", "solution": "", "duration": -1, "usages": [ @@ -644490,7 +644490,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [], @@ -644513,7 +644513,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "1; 4.", "solution": "", "duration": -1, "usages": [], @@ -644536,7 +644536,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "8; 4.", "solution": "", "duration": -1, "usages": [], @@ -644559,7 +644559,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "$M \\in a$,$M \\notin \\alpha$.", "solution": "", "duration": -1, "usages": [], @@ -644582,7 +644582,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "$\\{1,4,6\\}$.", "solution": "", "duration": -1, "usages": [], @@ -644605,7 +644605,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "选择题", - "ans": "", + "ans": "$D$.", "solution": "", "duration": -1, "usages": [], @@ -644628,7 +644628,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "选择题", - "ans": "", + "ans": "$C$.", "solution": "", "duration": -1, "usages": [], @@ -644651,7 +644651,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "选择题", - "ans": "", + "ans": "$A$.", "solution": "", "duration": -1, "usages": [], @@ -644674,7 +644674,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "1个或者无数个", "solution": "", "duration": -1, "usages": [], @@ -644697,7 +644697,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "平行四边形", "solution": "", "duration": -1, "usages": [], @@ -644720,7 +644720,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "10", "solution": "", "duration": -1, "usages": [], @@ -644743,7 +644743,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "填空题", - "ans": "", + "ans": "\\textcircled{1}, \\textcircled{2} ,\\textcircled{4}, \\textcircled{5}.", "solution": "", "duration": -1, "usages": [], @@ -644766,7 +644766,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "选择题", - "ans": "", + "ans": "$D$.", "solution": "", "duration": -1, "usages": [], @@ -644862,7 +644862,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "解答题", - "ans": "", + "ans": "$\\frac{5(\\sqrt{6}-1)}{2} $.", "solution": "", "duration": -1, "usages": [], @@ -644887,7 +644887,7 @@ "W20250301-2025届高二上学期周末卷01" ], "genre": "解答题", - "ans": "", + "ans": "$\\sqrt{2}+2\\sqrt{13}$.", "solution": "", "duration": -1, "usages": [], @@ -644910,7 +644910,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "(1) F ; (2) F; (3) F; (4) T; (5) T; (6) T; (7) T; (8) F.", "solution": "", "duration": -1, "usages": [], @@ -644933,7 +644933,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "(1) T ; (2) F; (3) F; (4) F; (5) F.", "solution": "", "duration": -1, "usages": [], @@ -644956,7 +644956,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "异面或者平行.", "solution": "", "duration": -1, "usages": [], @@ -644979,7 +644979,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "(1) 平行; (2) 异面.", "solution": "", "duration": -1, "usages": [], @@ -645002,7 +645002,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "相交或者平行.", "solution": "", "duration": -1, "usages": [], @@ -645025,7 +645025,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "充分不必要.", "solution": "", "duration": -1, "usages": [], @@ -645048,7 +645048,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "4个.", "solution": "", "duration": -1, "usages": [], @@ -645071,7 +645071,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "$45^{\\circ}$; $30^{\\circ}$或$60^{\\circ}$.", "solution": "", "duration": -1, "usages": [], @@ -645094,7 +645094,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "(1) $\\frac{\\pi}{3}$; (2) $\\arccos \\frac{\\sqrt{10}}{10}$; (3) $\\arccos \\frac{\\sqrt{10}}{5}$.", "solution": "", "duration": -1, "usages": [], @@ -645117,7 +645117,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "\\textcircled{1} \\textcircled{4}.", "solution": "", "duration": -1, "usages": [], @@ -645140,7 +645140,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{a}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -645163,7 +645163,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [], @@ -645232,7 +645232,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "解答题", - "ans": "", + "ans": "$\\frac{\\pi}{4}$或$\\frac{\\pi}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -645255,7 +645255,7 @@ "W20250302-2025届高二上学期周末卷02" ], "genre": "解答题", - "ans": "", + "ans": "(1) 点 $P$ 在$C$点; (2) 点 $P$ 在距离$C$点$\\frac{16}{5}$.", "solution": "", "duration": -1, "usages": [], @@ -645278,7 +645278,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\sqrt{39}}{2}$.", "solution": "", "duration": -1, "usages": [], @@ -645301,7 +645301,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\arctan\\frac{1}{5}$或者$\\arctan\\frac{4}{5}$.", "solution": "", "duration": -1, "usages": [], @@ -645324,7 +645324,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\arctan\\frac{2\\sqrt{5}}{5}$.", "solution": "", "duration": -1, "usages": [], @@ -645347,7 +645347,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{6}$.", "solution": "", "duration": -1, "usages": [], @@ -645370,7 +645370,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\sqrt{3}}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -645393,7 +645393,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "填空题", - "ans": "", + "ans": "$[ 30,90 ]$.", "solution": "", "duration": -1, "usages": [], @@ -645416,7 +645416,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\frac{\\sqrt{15}}{5}$; (2) $\\frac{\\pi}{6}$.", "solution": "", "duration": -1, "usages": [], @@ -645440,7 +645440,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "解答题", - "ans": "", + "ans": "$\\frac{\\sqrt{3}}{2}$.", "solution": "", "duration": -1, "usages": [], @@ -645463,7 +645463,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "解答题", - "ans": "", + "ans": "$\\frac{2}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -645486,7 +645486,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\arctan \\frac{\\sqrt{5}}{5}$; (2) $\\arccos \\frac{\\sqrt{30}}{10}$; (3) 在 $BC$ 边上存在一点 $G$, $BG$的值为1.", "solution": "", "duration": -1, "usages": [], @@ -645509,7 +645509,7 @@ "W20250303-2025届高二上学期周末卷03" ], "genre": "解答题", - "ans": "", + "ans": "(1) 略; (2) $\\arcsin \\frac{\\sqrt{21}}{7}$; (3) 存在 $P$, 使得 $DE \\parallel $ 平面 $BMP$, $\\dfrac{AP}{DP}$ 的值3.", "solution": "", "duration": -1, "usages": [], @@ -645532,7 +645532,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "填空题", - "ans": "", + "ans": "(1) $\\frac{\\sqrt{6}}{3}$; (2) $\\frac{\\sqrt{6}}{6}$; (3) $\\frac{\\sqrt{6}}{6}$.", "solution": "", "duration": -1, "usages": [], @@ -645557,7 +645557,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "填空题", - "ans": "", + "ans": "1或3.", "solution": "", "duration": -1, "usages": [], @@ -645580,7 +645580,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\pi}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -645603,7 +645603,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "填空题", - "ans": "", + "ans": "\\textcircled{1}\\textcircled{2}\\textcircled{3}\\textcircled{5}.", "solution": "", "duration": -1, "usages": [], @@ -645626,7 +645626,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [], @@ -645649,7 +645649,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [], @@ -645672,7 +645672,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [], @@ -645697,7 +645697,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "解答题", - "ans": "", + "ans": "$\\frac{\\pi}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -645720,7 +645720,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "解答题", - "ans": "", + "ans": "4.3", "solution": "", "duration": -1, "usages": [], @@ -645747,7 +645747,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1) 略; (2) $\\frac{\\sqrt{3}}{2}$; (3) $\\arcsin \\frac{2\\sqrt{5}}{5}$.", "solution": "", "duration": -1, "usages": [], @@ -645770,7 +645770,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\frac{\\pi}{2}$; (2) $\\frac{\\pi}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -645793,7 +645793,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1) 四边形 $MNDC$为矩形; (2) $\\arctan \\frac{\\sqrt{2}}{2}$; (3) $\\frac{\\sqrt{2}}{2}$.", "solution": "", "duration": -1, "usages": [], @@ -645816,7 +645816,7 @@ "W20250304-2025届高二上学期周末卷04" ], "genre": "解答题", - "ans": "", + "ans": "(1) 异面直线 $D_1E$ 与 $A_1D$ 所成角的大小不会随点 $E$ 的移动而改变, 所成角为$\\frac{\\pi}{2}$; \\\\(2) 点 $E$距离点 $A$ 为$2-\\sqrt{3}$, 二面角 $D_1-EC-D$ 的大小为 $\\dfrac{\\pi}{4}$; \\\\(3) 直线 $AD_1$ 平行于 平面 $B_1DE$.", "solution": "", "duration": -1, "usages": [], @@ -645839,7 +645839,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "\\textcircled{2}\\textcircled{3}", "solution": "", "duration": -1, "usages": [], @@ -645862,7 +645862,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "$75^{\\circ}$", "solution": "", "duration": -1, "usages": [], @@ -645885,7 +645885,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "arccos$\\frac{2}{3}$", "solution": "", "duration": -1, "usages": [], @@ -645908,7 +645908,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\pi}{4}$", "solution": "", "duration": -1, "usages": [], @@ -645931,7 +645931,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{41}$或$13$", "solution": "", "duration": -1, "usages": [], @@ -645956,7 +645956,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "$6$或$1.5$", "solution": "", "duration": -1, "usages": [], @@ -645981,7 +645981,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "$30^{\\circ}$", "solution": "", "duration": -1, "usages": [], @@ -646004,7 +646004,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "$3.5cm$", "solution": "", "duration": -1, "usages": [], @@ -646027,7 +646027,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\sqrt{2}}{2}$", "solution": "", "duration": -1, "usages": [], @@ -646050,7 +646050,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [], @@ -646073,7 +646073,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "选择题", - "ans": "", + "ans": "$A$", "solution": "", "duration": -1, "usages": [], @@ -646096,7 +646096,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "选择题", - "ans": "", + "ans": "$D$", "solution": "", "duration": -1, "usages": [], @@ -646119,7 +646119,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "解答题", - "ans": "", + "ans": "$(1)$略; $(2)\\frac{\\sqrt{14}}{14}$", "solution": "", "duration": -1, "usages": [], @@ -646142,7 +646142,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "解答题", - "ans": "", + "ans": "$(1)\\frac{\\pi}{6};(2)arccos\\frac{\\sqrt{3}}{3}$", "solution": "", "duration": -1, "usages": [], @@ -646165,7 +646165,7 @@ "W20250305-2025届高二上学期周末卷05" ], "genre": "解答题", - "ans": "", + "ans": "$(1)$略; $(2)arctan\\frac{\\sqrt{6}}{2}$;$(3)$略; $(4)\\frac{\\sqrt{2}}{6}$", "solution": "", "duration": -1, "usages": [], @@ -646188,7 +646188,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "无", "solution": "", "duration": -1, "usages": [], @@ -646211,7 +646211,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "选择题", - "ans": "", + "ans": "B.", "solution": "", "duration": -1, "usages": [], @@ -646234,7 +646234,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "2.", "solution": "", "duration": -1, "usages": [], @@ -646257,7 +646257,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "5.", "solution": "", "duration": -1, "usages": [], @@ -646280,7 +646280,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{29}$.", "solution": "", "duration": -1, "usages": [], @@ -646303,7 +646303,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\pi}{6}$.", "solution": "", "duration": -1, "usages": [], @@ -646326,7 +646326,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{15\\sqrt{3}}{2}$", "solution": "", "duration": -1, "usages": [], @@ -646351,7 +646351,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "填空题", - "ans": "", + "ans": "\\textcircled{1}\\textcircled{2}\\textcircled{4}", "solution": "", "duration": -1, "usages": [], @@ -646374,7 +646374,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "解答题", - "ans": "", + "ans": "(1)略; (2)$arccos\\frac{\\sqrt{15}}{5}$", "solution": "", "duration": -1, "usages": [], @@ -646397,7 +646397,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "解答题", - "ans": "", + "ans": "(1)略; (2)6.", "solution": "", "duration": -1, "usages": [], @@ -646423,7 +646423,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "解答题", - "ans": "", + "ans": "$S=\\begin{cases}\\frac{1}{2cos\\alpha},\\quad\\alpha\\in(0,arctan\\sqrt{2}]\\\\ \\frac{\\sqrt{2}-cot\\alpha}{sin\\alpha},\\alpha\\in(arctan\\sqrt{2},\\frac{\\pi}{2}]\\end{cases}$", "solution": "", "duration": -1, "usages": [], @@ -646446,7 +646446,7 @@ "W20250306-2025届高二上学期周末卷06" ], "genre": "解答题", - "ans": "", + "ans": "(1)略; (2)$\\frac{2\\sqrt{6}}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -646469,7 +646469,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$8$.", "solution": "", "duration": -1, "usages": [], @@ -646492,7 +646492,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$arctan\\frac{\\sqrt{3}}{2}$.", "solution": "", "duration": -1, "usages": [], @@ -646515,7 +646515,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$64.$", "solution": "", "duration": -1, "usages": [], @@ -646538,7 +646538,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$arctan\\sqrt{2}$.", "solution": "", "duration": -1, "usages": [], @@ -646561,7 +646561,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$10.$", "solution": "", "duration": -1, "usages": [], @@ -646584,7 +646584,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$(1)$外心; $(2)$内心; $(3)$垂心.", "solution": "", "duration": -1, "usages": [], @@ -646607,7 +646607,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{3}$", "solution": "", "duration": -1, "usages": [], @@ -646630,7 +646630,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$48$.", "solution": "", "duration": -1, "usages": [], @@ -646653,7 +646653,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{6}{7}$.", "solution": "", "duration": -1, "usages": [], @@ -646676,7 +646676,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "选择题", - "ans": "", + "ans": "A.", "solution": "", "duration": -1, "usages": [], @@ -646699,7 +646699,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "解答题", - "ans": "", + "ans": "$S=32,V=16$.", "solution": "", "duration": -1, "usages": [], @@ -646722,7 +646722,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "解答题", - "ans": "", + "ans": "$\\frac{2\\sqrt{11}}{11}$.", "solution": "", "duration": -1, "usages": [], @@ -646747,7 +646747,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "解答题", - "ans": "", + "ans": "$(1)$略; $(2)\\frac{5}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -646770,7 +646770,7 @@ "W20250307-2025届高二上学期周末卷07" ], "genre": "解答题", - "ans": "", + "ans": "$(1)V=a^2;(2)$\\textcircled{1}$\\frac{\\sqrt{51}}{9}$;\\textcircled{2}$\\frac{\\sqrt{30}}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -646793,7 +646793,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{29}$.", "solution": "", "duration": -1, "usages": [], @@ -646816,7 +646816,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\sqrt{6}}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -646839,7 +646839,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$arctan\\frac{\\sqrt{5}}{5}$.", "solution": "", "duration": -1, "usages": [], @@ -646862,7 +646862,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$arccos\\frac{2}{3}$.", "solution": "", "duration": -1, "usages": [], @@ -646885,7 +646885,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\pi}{6}$.", "solution": "", "duration": -1, "usages": [], @@ -646908,7 +646908,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{15\\sqrt{3}}{2}$.", "solution": "", "duration": -1, "usages": [], @@ -646933,7 +646933,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$3\\pi^2$或$\\frac{9}{2}\\pi^2$.", "solution": "", "duration": -1, "usages": [], @@ -646956,7 +646956,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{\\sqrt{3}}{2}a$.", "solution": "", "duration": -1, "usages": [], @@ -646979,7 +646979,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\pi$.", "solution": "", "duration": -1, "usages": [], @@ -647002,7 +647002,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\sqrt{2}:1$.", "solution": "", "duration": -1, "usages": [], @@ -647025,7 +647025,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$1:4:9$.", "solution": "", "duration": -1, "usages": [], @@ -647048,7 +647048,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{8}{3}\\pi$.", "solution": "", "duration": -1, "usages": [], @@ -647071,7 +647071,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$12:15:20$.", "solution": "", "duration": -1, "usages": [], @@ -647096,7 +647096,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "填空题", - "ans": "", + "ans": "$576$.", "solution": "", "duration": -1, "usages": [], @@ -647119,7 +647119,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "解答题", - "ans": "", + "ans": "$\\theta_{min}=\\pi-arctan\\frac{4}{3}$,此时$P$ 在线段 $A_1C_1$ 的中点.", "solution": "", "duration": -1, "usages": [], @@ -647142,7 +647142,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "解答题", - "ans": "", + "ans": "略.", "solution": "", "duration": -1, "usages": [], @@ -647165,7 +647165,7 @@ "W20250308-2025届高二上学期周末卷08" ], "genre": "解答题", - "ans": "", + "ans": "$(1)$略; $(2)arctan\\sqrt{2}$;$(3)$是, $\\frac{\\sqrt{6}}{24}$.", "solution": "", "duration": -1, "usages": [], @@ -647188,7 +647188,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$P^{6}_{20-m}$.", "solution": "", "duration": -1, "usages": [], @@ -647211,7 +647211,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$60$.", "solution": "", "duration": -1, "usages": [], @@ -647234,7 +647234,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$48$.", "solution": "", "duration": -1, "usages": [], @@ -647257,7 +647257,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$6$.", "solution": "", "duration": -1, "usages": [], @@ -647283,7 +647283,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$6$.", "solution": "", "duration": -1, "usages": [], @@ -647306,7 +647306,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$156$.", "solution": "", "duration": -1, "usages": [], @@ -647332,7 +647332,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$103$.", "solution": "", "duration": -1, "usages": [], @@ -647355,7 +647355,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$48$.", "solution": "", "duration": -1, "usages": [], @@ -647378,7 +647378,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$(\\frac{2}{3},1)$.", "solution": "", "duration": -1, "usages": [], @@ -647401,7 +647401,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "填空题", - "ans": "", + "ans": "$a_{n}=\\begin{cases}2-a,n=1 \\\\2^{n-1},n\\geq2\n\\end{cases}$.", "solution": "", "duration": -1, "usages": [], @@ -647426,7 +647426,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "解答题", - "ans": "", + "ans": "(1)$m=9$;(2)$k_{n}=3^{n+1}+2$.", "solution": "", "duration": -1, "usages": [], @@ -647449,7 +647449,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "解答题", - "ans": "", + "ans": "$(-\\frac{1}{11},-\\frac{1}{19})$.", "solution": "", "duration": -1, "usages": [], @@ -647474,7 +647474,7 @@ "W20250309-2025届高二上学期周末卷09" ], "genre": "解答题", - "ans": "", + "ans": "(1)略; (2)$S_{n}=\\frac{2}{3}-(n+\\frac{2}{3})(\\frac{1}{4})^{n}$;(3)$(-\\infty,-5]\\cup[1,+\\infty)$.", "solution": "", "duration": -1, "usages": [], @@ -647497,7 +647497,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "$1716$.", "solution": "", "duration": -1, "usages": [], @@ -647520,7 +647520,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "5或8.", "solution": "", "duration": -1, "usages": [], @@ -647544,7 +647544,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "$x=15,y=5$.", "solution": "", "duration": -1, "usages": [], @@ -647568,7 +647568,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "21.", "solution": "", "duration": -1, "usages": [], @@ -647592,7 +647592,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "6.", "solution": "", "duration": -1, "usages": [], @@ -647615,7 +647615,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "540.", "solution": "", "duration": -1, "usages": [], @@ -647640,7 +647640,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "2880.", "solution": "", "duration": -1, "usages": [], @@ -647663,7 +647663,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "200.", "solution": "", "duration": -1, "usages": [], @@ -647686,7 +647686,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "$-1$.", "solution": "", "duration": -1, "usages": [], @@ -647711,7 +647711,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "$2^{n-1},n\\in \\mathbf{N}$且$n\\ge1$.", "solution": "", "duration": -1, "usages": [], @@ -647734,7 +647734,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "$2^{n-1},n\\in \\mathbf{N}$且$n\\ge1$.", "solution": "", "duration": -1, "usages": [], @@ -647757,7 +647757,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "$7(\\frac{1}{3})^{n-1}-6,n\\in \\mathbf{N}$且$n\\ge1$.", "solution": "", "duration": -1, "usages": [], @@ -647780,7 +647780,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "填空题", - "ans": "", + "ans": "$765$.", "solution": "", "duration": -1, "usages": [], @@ -647803,7 +647803,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "解答题", - "ans": "", + "ans": "(1)58409520;(2)6275430;(3)64684945;(4)64682995.", "solution": "", "duration": -1, "usages": [], @@ -647830,7 +647830,7 @@ "W20250310-2025届高二上学期周末卷10" ], "genre": "解答题", - "ans": "", + "ans": "$92$.", "solution": "", "duration": -1, "usages": [], @@ -647949,7 +647949,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{3}{5}$", "solution": "", "duration": -1, "usages": [], @@ -647976,7 +647976,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{3}{7}$", "solution": "", "duration": -1, "usages": [], @@ -647999,7 +647999,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{1}{35}$", "solution": "", "duration": -1, "usages": [], @@ -648022,7 +648022,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{2}{7}$", "solution": "", "duration": -1, "usages": [], @@ -648045,7 +648045,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{2}{27}$", "solution": "", "duration": -1, "usages": [], @@ -648068,7 +648068,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$\\frac{9}{10}$", "solution": "", "duration": -1, "usages": [], @@ -648093,7 +648093,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$-49$", "solution": "", "duration": -1, "usages": [], @@ -648116,7 +648116,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "填空题", - "ans": "", + "ans": "$12$", "solution": "", "duration": -1, "usages": [], @@ -648139,7 +648139,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "解答题", - "ans": "", + "ans": "$\\frac{5}{6}$", "solution": "", "duration": -1, "usages": [], @@ -648164,7 +648164,7 @@ "W20250311-2025届高二上学期周末卷11" ], "genre": "解答题", - "ans": "", + "ans": "(1) $d_1, d_2, d_3$ 的值分别为2,3,6;\\\\\n(2) 略; (3) 略.", "solution": "", "duration": -1, "usages": [], @@ -648187,7 +648187,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "$0.54$", "solution": "", "duration": -1, "usages": [], @@ -648210,7 +648210,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{5}{36}$; $\\dfrac{5}{12}$", "solution": "", "duration": -1, "usages": [], @@ -648235,7 +648235,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "$\\dfrac{3}{8}$; $\\dfrac{7}{8}$", "solution": "", "duration": -1, "usages": [], @@ -648261,7 +648261,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "$0.88$", "solution": "", "duration": -1, "usages": [], @@ -648286,7 +648286,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "$0.9$", "solution": "", "duration": -1, "usages": [], @@ -648311,7 +648311,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "$7$或$8$", "solution": "", "duration": -1, "usages": [], @@ -648334,7 +648334,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "填空题", - "ans": "", + "ans": "(1) F; (2) F; (3) T; (4) F.", "solution": "", "duration": -1, "usages": [], @@ -648357,7 +648357,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\dfrac{4}{15}$; (2) $\\dfrac{11}{15}$", "solution": "", "duration": -1, "usages": [], @@ -648382,7 +648382,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\dfrac{70}{323}$; (2) $\\dfrac{728}{969}$; (3) $\\dfrac{27}{128}$", "solution": "", "duration": -1, "usages": [], @@ -648405,7 +648405,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\dfrac{211}{3456}$; (2) $\\dfrac{7}{10}$; (3) $\\dfrac{1}{15}$", "solution": "", "duration": -1, "usages": [], @@ -648430,7 +648430,7 @@ "W20250312-2025届高二上学期周末卷12" ], "genre": "解答题", - "ans": "", + "ans": "(1) $c_n=2n-1$; (2) $S_n=1+(n-1)3^n$", "solution": "", "duration": -1, "usages": [], @@ -648453,7 +648453,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "填空题", - "ans": "", + "ans": "$18$", "solution": "", "duration": -1, "usages": [], @@ -648480,7 +648480,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [], @@ -648506,7 +648506,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "选择题", - "ans": "", + "ans": "A", "solution": "", "duration": -1, "usages": [], @@ -648534,7 +648534,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [], @@ -648557,7 +648557,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "选择题", - "ans": "", + "ans": "B", "solution": "", "duration": -1, "usages": [], @@ -648582,7 +648582,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "选择题", - "ans": "", + "ans": "C", "solution": "", "duration": -1, "usages": [], @@ -648608,7 +648608,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "填空题", - "ans": "", + "ans": "$55$", "solution": "", "duration": -1, "usages": [], @@ -648631,7 +648631,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "填空题", - "ans": "", + "ans": "$50$; $1015$", "solution": "", "duration": -1, "usages": [], @@ -648655,7 +648655,7 @@ "W20250314-2025届高二上学期周末卷14" ], "genre": "填空题", - "ans": "", + "ans": "$3$", "solution": "", "duration": -1, "usages": [], @@ -648678,7 +648678,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "填空题", - "ans": "", + "ans": "$n=1$时, $a_n=5$; $n \\geq 2$时, $a_n=2n-2$", "solution": "", "duration": -1, "usages": [], @@ -648705,7 +648705,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "填空题", - "ans": "", + "ans": "$2^n+3$", "solution": "", "duration": -1, "usages": [], @@ -648730,7 +648730,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "填空题", - "ans": "", + "ans": "$1049410$", "solution": "", "duration": -1, "usages": [], @@ -648753,7 +648753,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "填空题", - "ans": "", + "ans": "$19$", "solution": "", "duration": -1, "usages": [], @@ -648778,7 +648778,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "解答题", - "ans": "", + "ans": "(1) $0.5$; (2) $\\frac{3}{16}$; (3) 略", "solution": "", "duration": -1, "usages": [], @@ -648803,7 +648803,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "解答题", - "ans": "", + "ans": "(1) $\\{a_n\\}-3n+15$; (2) $T_n=\\frac{1}{6}(\\frac{3}{2}-\\frac{1}{n+1}-\\frac{1}{n+2})$", "solution": "", "duration": -1, "usages": [], @@ -648828,7 +648828,7 @@ "W20250313-2025届高二上学期周末卷13" ], "genre": "解答题", - "ans": "", + "ans": "(1) $P_3=-2p^3+3p^2$; $P_4=4p^3-3p^4$; (2) 当$0