添加两道关联题

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wangweiye7840 2023-11-20 16:46:36 +08:00
parent 4792f4fc58
commit d62842d505
1 changed files with 52 additions and 2 deletions

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"20230905\t王伟叶"
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@ -595480,7 +595482,9 @@
"20230905\t王伟叶"
],
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@ -603631,6 +603635,52 @@
"space": "",
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},
"022796": {
"id": "022796",
"content": "已知 $m \\in \\mathbf{R}$, $m<0$. 分别求函数 $f(x)=x^2+2 x+3$ 在区间 $[m, 0]$ 上的最大值与最小值.",
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"duration": -1,
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"origin": "2025届高一上学期周末卷13-20231120修改",
"edit": [
"20230905\t王伟叶",
"20231120\t严捷"
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"related": [
"022463"
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"022797": {
"id": "022797",
"content": "已知 $a$ 为实常数, 设 $f(x)=\\begin{cases}(x-a)^2,& x \\leq 0,\\\\x+\\dfrac{4}{x}+3 a,& x>0 .\\end{cases}$ 若 $f(0)$ 是 $f(x)$ 的最小值, 则 $a$ 的取值范围为\\blank{50}.",
"objs": [],
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"duration": -1,
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"origin": "2025届高一上学期周末卷13-20231120修改",
"edit": [
"20230905\t王伟叶",
"20231120\t严捷"
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"030001": {
"id": "030001",
"content": "若$x,y,z$都是实数, 则:(填写``\\textcircled{1} 充分非必要、\\textcircled{2} 必要非充分、\\textcircled{3} 充要、\\textcircled{4} 既非充分又非必要''之一)\\\\\n(1) ``$xy=0$''是``$x=0$''的\\blank{50}条件;\\\\\n(2) ``$x\\cdot y=y\\cdot z$''是``$x=z$''的\\blank{50}条件;\\\\\n(3) ``$\\dfrac xy=\\dfrac yz$''是``$xz=y^2$''的\\blank{50}条件;\\\\\n(4) ``$|x |>| y|$''是``$x>y>0$''的\\blank{50}条件;\\\\\n(5) ``$x^2>4$''是``$x>2$'' 的\\blank{50}条件;\\\\\n(6) ``$x=-3$''是``$x^2+x-6=0$'' 的\\blank{50}条件;\\\\\n(7) ``$|x+y|<2$''是``$|x|<1$且$|y|<1$'' 的\\blank{50}条件;\\\\\n(8) ``$|x|<3$''是``$x^2<9$'' 的\\blank{50}条件;\\\\\n(9) ``$x^2+y^2>0$''是``$x\\ne 0$'' 的\\blank{50}条件;\\\\\n(10) ``$\\dfrac{x^2+x+1}{3x+2}<0$''是``$3x+2<0$'' 的\\blank{50}条件;\\\\\n(11) ``$0<x<3$''是``$|x-1|<2$'' 的\\blank{50}条件.",