添加20176关联题目19838

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wangweiye7840 2023-09-25 16:27:34 +08:00
parent a17caa8984
commit e2e3ae1197
1 changed files with 28 additions and 1 deletions

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@ -512630,6 +512630,31 @@
"space": "4em",
"unrelated": []
},
"019838": {
"id": "019838",
"content": "已知$a\\in \\mathbf{R}$, 当$|x^2-4|\\ge 1$成立时, $|x-2|\\ge a$也成立, 求$a$的取值范围.",
"objs": [],
"tags": [
"第一单元"
],
"genre": "4em",
"ans": "$(-\\infty,-2+\\sqrt{5}]$",
"solution": "",
"duration": -1,
"usages": [],
"origin": "2025届高一校本作业必修第二章-20230925修改",
"edit": [
"20220901\t王伟叶\t伍杨超",
"20230925\t王伟叶"
],
"same": [],
"related": [
"020176"
],
"remark": "",
"space": "4em",
"unrelated": []
},
"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.",
@ -518015,7 +518040,9 @@
"20220901\t王伟叶\t伍杨超"
],
"same": [],
"related": [],
"related": [
"019838"
],
"remark": "",
"space": "4em",
"unrelated": []