添加关联题

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wangweiye7840 2024-03-04 14:18:35 +08:00
parent f67500d44e
commit f76730fd5c
1 changed files with 28 additions and 1 deletions

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@ -599077,7 +599077,9 @@
"20230209\t王伟叶"
],
"same": [],
"related": [],
"related": [
"024615"
],
"remark": "",
"space": "",
"unrelated": []
@ -680605,6 +680607,31 @@
"space": "4em",
"unrelated": []
},
"024615": {
"id": "024615",
"content": "在$\\triangle ABC$中, 已知$A=30^{\\circ}$, $b=18$.\\\\\n(1) 当$B$有且仅有一解时, $a$的取值范围为\\blank{50};\\\\\n(2) 当$B$有且仅有两解时, $a$的取值范围为\\blank{50}.",
"objs": [],
"tags": [
"第三单元"
],
"genre": "",
"ans": "(1) $\\{9\\} \\cup \\left[18,+ \\infty \\right)$;\\\\\n(2) $\\left( 9,18 \\right)$.",
"solution": "",
"duration": -1,
"usages": [],
"origin": "2025届高一下校本作业-20240304修改",
"edit": [
"20230209\t王伟叶",
"20240304\t王伟叶"
],
"same": [],
"related": [
"021613"
],
"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.",