添加20527的关联题22696

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wangweiye7840 2023-11-07 15:02:46 +08:00
parent a2cc60138b
commit dfb0e9fbad
1 changed files with 28 additions and 1 deletions

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@ -539978,7 +539978,9 @@
"20221231\t王伟叶"
],
"same": [],
"related": [],
"related": [
"022696"
],
"remark": "",
"space": "4em",
"unrelated": []
@ -599109,6 +599111,31 @@
"space": "4em",
"unrelated": []
},
"022696": {
"id": "022696",
"content": "判断下列函数$y=f(x)$的奇偶性, 并给出证明:\\\\\n(1) $f(x)=2 x-x^2$;\\\\\n(2) $f(x)=\\dfrac{1-x}{1+x}$;\\\\\n(3) $f(x)=\\begin{cases}-x^2+x, & x \\geq 0, \\\\x^2+x, & x<0.\\end{cases}$",
"objs": [],
"tags": [
"第二单元"
],
"genre": "4em",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "2025届高一校本作业必修第五章-20231107修改",
"edit": [
"20221231\t王伟叶",
"20231107\t王伟叶"
],
"same": [],
"related": [
"020527"
],
"remark": "",
"space": "4em",
"unrelated": []
},
"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.",