添加两道关联题

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wangweiye7840 2023-09-25 16:43:03 +08:00
parent 75ee33cd1d
commit 26f29f9c0d
1 changed files with 28 additions and 1 deletions

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@ -512684,6 +512684,31 @@
"space": "4em", "space": "4em",
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"019840": {
"id": "019840",
"content": "已知$a,b>0$, 满足$a+b=4$.\\\\\n(1) 求$a^2+b^2$的最小值;\\\\\n(2) 求$\\dfrac 1a+\\dfrac 4b$的最小值;\\\\\n(3) 求$\\dfrac 1{a+1}+\\dfrac 8{2b+5}$的最小值.",
"objs": [],
"tags": [
"第一单元"
],
"genre": "4em",
"ans": "(1) $8$; (2) $\\dfrac{9}{4}$; (3) $\\dfrac{6}{5}$",
"solution": "",
"duration": -1,
"usages": [],
"origin": "2025届高一校本作业必修第二章-20230925修改",
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"20220901\t王伟叶\t伍杨超",
"20230925\t王伟叶"
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"020001": { "020001": {
"id": "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.", "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.",
@ -518839,7 +518864,9 @@
"20220901\t王伟叶\t伍杨超" "20220901\t王伟叶\t伍杨超"
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"space": "4em", "space": "4em",
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