修改G20260108-0111选题及相关题目

This commit is contained in:
wangweiye7840 2023-09-11 16:19:26 +08:00
parent 603fd9c873
commit b033be0610
2 changed files with 78 additions and 18 deletions

View File

@ -345,6 +345,7 @@
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@ -497934,13 +497934,13 @@
},
"019282": {
"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.",
"content": "已知 $0\\le \\alpha\\le \\beta\\le \\pi$.\\\\\n(1) $\\alpha-\\beta$ 的最大值为\\blank{50}, 最小值为\\blank{50};\\\\\n(2) $2 \\alpha-\\beta$ 的最大值为\\blank{50}, 最小值为\\blank{50}.",
"objs": [],
"tags": [
"第一单元",
"不等式"
],
"genre": "解答题",
"genre": "填空题",
"ans": "(1) $\\alpha-\\beta$的最大值为$0$, 最小值为$-\\pi$;\\\\\n(2) $2\\alpha-\\beta$的最大值为$2\\pi$, 最小值为$-\\pi$.",
"solution": "",
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@ -497952,7 +497952,7 @@
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"space": "4em",
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"019283": {
@ -509530,6 +509530,69 @@
"space": "4em",
"unrelated": []
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"019807": {
"id": "019807",
"content": "(1) 已知$a>b>0$, 求证: $\\dfrac{1}{b}>\\dfrac{1}{a}>0$;\\\\\n (2) 已知$a>b>0$, $c>d>0$, 求证: $\\dfrac{a}{d}>\\dfrac{b}{c}$.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "上教版新教材例题",
"edit": [
"20230911\t赵琍琍"
],
"same": [],
"related": [],
"remark": "",
"space": "4em",
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"019808": {
"id": "019808",
"content": "已知$a,b$是实数, 且$a>b$, 求证: $a^3>b^3$.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20230911\t赵琍琍"
],
"same": [],
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"remark": "",
"space": "4em",
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"019809": {
"id": "019809",
"content": "指出陈述句 $P$ 是陈述句 $Q$ 的什么条件. (用选项回答: A. 充分不必要 B. 必要不充分 C. 充分必要 D. 既不充分又不必要)\\\\\n(1) $P$: $x=0$, $Q$: $x^2=0$: \\bracket{20};\\\\\n(2) $P$: $x+y+z>0$, $Q$: $x>0$ 或 $y>0$ 或 $z>0$: \\bracket{20};\\\\\n(3) $P$: $x+y+z>0$, $Q$: $x>0$ 且 $y>0$ 且 $z>0$: \\bracket{20};\\\\\n(4) $P$: $x / y>0$, $Q$: $x y>0$: \\bracket{20};\\\\\n(5) $P$: $x / y \\geq 0$, $Q$: $x y \\geq 0$: \\bracket{20};\\\\\n(6) $P$: $(x-3)^2+(y+4)^2=0$, $Q$: $(x-3)(y-4)=0$: \\bracket{20};\\\\\n(7) $P$: $x+y>0$ 且 $x y>0$, $Q$: $x>0$ 且 $y>0$: \\bracket{20};\\\\\n(8) $P$: $x+y>4$ 且 $x y>4$, $Q$: $x>2$ 且 $y>2$: \\bracket{20};\\\\\n(9) $P$: 函数 $y=k x+b$ 的图像通过原点 (其中 $k, b$ 为常数), $Q$: $b=0$: \\bracket{20};\\\\\n(10) $P$: $x z>y z$ 且 $z \\neq 0$, $Q$: $x>y$ 且 $z \\neq 0$: \\bracket{20};\\\\\n(11) $P$: $|x|<2$, $Q$: $x<2$: \\bracket{20};\\\\\n(12) $P$: $x^2+1=y$ 且 $x+1=y$, $Q$: $x^2=x$ 且 $x^2+1=y$: \\bracket{20}.",
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"duration": -1,
"usages": [],
"origin": "2025届高一上学期周末卷03-20230911修改",
"edit": [
"20230905\t王伟叶",
"20230911\t赵琍琍"
],
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"020001": {
"id": "020001",
"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) 上海市控江中学$2022$年入学的全体高一年级新生;\\\\\n(2) 中国现有各省的名称;\\\\\n(3) 太阳、$2$、上海市;\\\\\n(4) 大于$10$且小于$15$的有理数;\\\\\n(5) 末位是$3$的自然数;\\\\\n(6) 影响力比较大的中国数学家;\\\\\n(7) 方程$x^2+x-3=0$的所有实数解;\\\\ \n(8) 函数$y=\\dfrac 1x$图像上所有的点;\\\\ \n(9) 在平面直角坐标系中, 到定点$(0, 0)$的距离等于$1$的所有点;\\\\\n(10) 不等式$3x-10<0$的所有正整数解;\\\\\n(11) 所有的平面四边形.",
@ -568906,7 +568969,9 @@
"20230905\t王伟叶"
],
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