添加一个关联题(去掉一小题)

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weiye.wang 2024-01-16 21:45:39 +08:00
parent 63fdf85d2e
commit 8dc9c584d9
1 changed files with 28 additions and 1 deletions

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@ -582854,7 +582854,9 @@
"20230209\t王伟叶"
],
"same": [],
"related": [],
"related": [
"023602"
],
"remark": "",
"space": "",
"unrelated": []
@ -638106,6 +638108,31 @@
"space": "4em",
"unrelated": []
},
"023602": {
"id": "023602",
"content": "写出下列函数的最小正周期:\\\\\n(1) $y=\\sin \\dfrac{x}{4}$的最小正周期为\\blank{50};\\\\\n(2) $y=\\cos ^2 x$的最小正周期为\\blank{50};\\\\\n(3) $y=\\sin x+\\sqrt{3} \\cos x$的最小正周期为\\blank{50}.",
"objs": [],
"tags": [
"第三单元"
],
"genre": "",
"ans": "(1) $8\\pi$; (2) $\\pi$; (3) $2\\pi$.",
"solution": "",
"duration": -1,
"usages": [],
"origin": "2025届高一下校本作业-20240116修改",
"edit": [
"20230209\t王伟叶",
"20240116\t朱敏慧"
],
"same": [],
"related": [
"021647"
],
"remark": "",
"space": "",
"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.",