给一些尚未赋予单元的题目挂钩单元

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weiye.wang 2023-07-26 22:28:55 +08:00
parent 005c2e6b71
commit ff76c82fbf
1 changed files with 96 additions and 25 deletions

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@ -493851,7 +493851,10 @@
"id": "019279",
"content": "已知幂函数 $y=x^s$, $y=x^t$ 的图像在第一象限内的部分关于直线 $y=x$ 对称, 则 $s, t$ 应该满足什么关系式, 为什么?",
"objs": [],
"tags": [],
"tags": [
"第二单元",
"幂函数"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -493871,7 +493874,10 @@
"id": "019280",
"content": "若 $-2 \\leq x \\leq 3$, $-1 \\leq y \\leq 4$, 求 $x-2 y$ 的最小值, 并指出取到最小值时 $x, y$ 的取值.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -493891,7 +493897,10 @@
"id": "019281",
"content": "``$\\begin{cases}2<x+y<4,\\\\0<x y<3\\end{cases}$''是``$\\begin{cases}2<x<3,\\\\0<y<1\\end{cases}$''的\\bracket{20}.\n\\twoch{充分但非必要条件}{必要但非充分条件}{充分必要条件}{既非充分又非必要条件}",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "选择题",
"ans": "",
"solution": "",
@ -493911,7 +493920,10 @@
"id": "019282",
"content": "已知 $0\\le \\alpha\\le \\beta\\le \\pi$.\\\\\n(1) 求 $\\alpha-\\beta$ 的最大值与最小值;\\\\\n(2) 求 $2 \\alpha-\\beta$ 的最大值与最小值.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -493931,7 +493943,10 @@
"id": "019283",
"content": "已知 $a<0$, $b>0$, $a+b>0$, 比较 $b,-a, b-a, a-b$ 四个数的大小.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -493952,7 +493967,8 @@
"content": "设$a_1,a_2,b_1,b_2,c_1,c_2$均为非零实数, 关于$x$的方程$a_1x^2+b_1x+c_1=0$与$a_2x^2+b_2x+c_2=0$的解集分别为$M$和$N$, 那么``$\\dfrac{a_1}{a_2}=\\dfrac{b_1}{b_2}=\\dfrac{c_1}{c_2}$''是``$M=N$''的\\bracket{20}.\n\\twoch{充分非必要条件}{必要非充分条件}{充要条件}{既非充分又非必要条件}",
"objs": [],
"tags": [
"第一单元"
"第一单元",
"不等式"
],
"genre": "",
"ans": "",
@ -493976,7 +493992,10 @@
"id": "019285",
"content": "解关于$x$的不等式 $x^2+x-a \\geq 0$($a$ 为常数).",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -493996,7 +494015,10 @@
"id": "019286",
"content": "设关于 $x$ 的不等式 $x^2-(2 a+1) x+a^2+a-2>0$ 和 $x^2-(a^2+a) x+a^3<0$ (其中 $a$为常数 ) 的解集分别为 $A$ 和 $B$.\\\\\n (1) 若 $A \\cap B=\\varnothing$, 求实数 $a$ 的取值范围;\\\\\n (2) 是否存在实数 $a$, 使 $A \\cup B=\\mathbf{R}$ ? 如果存在, 求实数 $a$ 的值; 如果不存在, 说明理由.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494016,7 +494038,10 @@
"id": "019287",
"content": "(1) 对于任意 $x \\in \\mathbf{R}$, 不等式 $x^2-2 x+3-m \\geq 0$ 恒成立, 求实数 $m$ 的取值范围;\\\\\n (2) 对于任意 $x \\in[0,3]$, 不等式 $x^2-2 x+3-m<0$ 恒成立, 求实数 $m$ 的取值范围.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494036,7 +494061,10 @@
"id": "019288",
"content": "若不等式 $2 x-1>m(x^2-1)$ 对满足 $-2 \\leq m \\leq 2$ 的所有 $x$ 都成立, 求 $x$ 的取值范围.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494056,7 +494084,10 @@
"id": "019289",
"content": "解关于 $x$ 的不等式: $\\dfrac{2 x^2+(a-1) x+3}{x^2+a x}>1$.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494076,7 +494107,10 @@
"id": "019290",
"content": "求 $k$ 的值的集合, 使得不等式$\\dfrac{2 x^2+2 k x+k}{4 x^2+6 x+3}<1$恒成立.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494096,7 +494130,10 @@
"id": "019291",
"content": "解不等式 $\\dfrac{x^2-9 x+11}{x^2-2 x+1}\\geq 7$.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494116,7 +494153,10 @@
"id": "019292",
"content": "解关于 $x$ 的不等式: $\\dfrac{a(x-1)}{x-2}>1 $($a \\in \\mathbf{R}$).",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494136,7 +494176,10 @@
"id": "019293",
"content": "已知不等式 $\\dfrac{x-a}{x^2+x+1}>\\dfrac{x+b}{x^2-x+1}$ 的解集是 $(\\dfrac{1}{2}, 1)$, 求实数 $a, b$ 的值.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494156,7 +494199,10 @@
"id": "019294",
"content": "当 $a$ 为何实数值时, 关于 $x$ 的方程 $a(3 x-1)=4 x+7$ 的解是正数? 又 $a$ 为何值时, 方程的解在区间 $[-3,2)$ 中?",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494177,7 +494223,8 @@
"content": "求下列不等式的解集.\\\\\n(1) $|x^2-3|<2$;\\\\\n(2) $|\\dfrac 1{2-x}|\\ge 2$;\\\\\n(3) $|x^2-3x+2|\\le 0$.",
"objs": [],
"tags": [
"第一单元"
"第一单元",
"不等式"
],
"genre": "4em",
"ans": "",
@ -494201,7 +494248,10 @@
"id": "019296",
"content": "若关于 $x$ 的不等式 $|a x+2|<6$ 的解集是 $(-1,2)$, 求不等式 $\\dfrac{x}{a x+2}\\leq 1$ 的解集.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494221,7 +494271,10 @@
"id": "019297",
"content": "解关于 $x$ 的不等式: $|x-1|>|x-a|$($a \\in \\mathbf{R}$).",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494241,7 +494294,10 @@
"id": "019298",
"content": "已知关于 $x$ 的不等式 $|x-2|+|x-1|<m$($m>0$) 的解集为非空集合, 求 $m$ 的取值范围.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494261,7 +494317,10 @@
"id": "019299",
"content": "设 $a, b, c \\in (0,+\\infty)$, 求证: $\\sqrt{a^2+b^2}+\\sqrt{b^2+c^2}+\\sqrt{c^2+a^2}\\geq \\sqrt{2}(a+b+c)$.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494281,7 +494340,10 @@
"id": "019300",
"content": "已知: $a, b, c \\in (0,+\\infty)$, 求证: $a^3+b^3+c^3 \\geq \\dfrac{1}{3}(a^2+b^2+c^2)(a+b+c)$.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -494301,7 +494363,10 @@
"id": "019301",
"content": "已知: $a, b, c \\in (0,+\\infty)$, 求证: $a^4+b^4+c^4 \\geq a b c(a+b+c)$.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -590237,7 +590302,10 @@
"id": "031404",
"content": "判断下列各组对象能否组成集合, 若能组成集合, 指出是有限集还是无限集.\\\\\n(1) 中国现有各省的名称;\\\\\n(2) 大于$10$且小于$15$的有理数;\\\\\n(3) 所有好吃的水果.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"集合"
],
"genre": "解答题",
"ans": "",
"solution": "",
@ -590257,7 +590325,10 @@
"id": "031405",
"content": "用``$\\in$''或``$\\notin$''填空:\\\\\n(1) $-2$\\blank{20}$\\mathbf{N}$;\\\\\n(2) $-10$\\blank{20}$\\mathbf{Z}$;\\\\\n(3) $6.13\\dot{1}\\dot{4}$\\blank{20}$\\mathbf{Q}$;\\\\\n(4) $2 \\pi$\\blank{20}$\\mathbf{R}$;\\\\\n(5) $0 \\times 1$\\blank{20}$\\varnothing$.",
"objs": [],
"tags": [],
"tags": [
"第一单元",
"集合"
],
"genre": "填空题",
"ans": "",
"solution": "",