diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json index 7473fdf4..7a40c1a8 100644 --- a/题库0.3/Problems.json +++ b/题库0.3/Problems.json @@ -48801,7 +48801,9 @@ "20220625\t王伟叶" ], "same": [], - "related": [], + "related": [ + "024618" + ], "remark": "", "space": "", "unrelated": [] @@ -680686,6 +680688,81 @@ "space": "", "unrelated": [] }, + "024618": { + "id": "024618", + "content": "将下列各式写成$A\\sin(\\alpha+\\varphi)$的形式, 其中$A>0$, $\\varphi\\in [-\\pi,\\pi)$.\\\\ \n(1) $\\cos\\alpha+\\sin\\alpha=$\\blank{100};\\\\ \n(2) $\\sqrt{3}\\sin\\alpha-\\cos\\alpha=$\\blank{100};\\\\ \n(3) $\\cos\\alpha-\\sqrt{3}\\sin\\alpha=$\\blank{100};\\\\ \n(4) $3\\sin\\alpha+4\\cos\\alpha=$\\blank{100}, 其中$\\varphi$满足\\blank{100};\\\\ \n(5) $12\\sin\\alpha-5\\cos\\alpha=$\\blank{100}, 其中$\\varphi$满足\\blank{100}.", + "objs": [], + "tags": [ + "第三单元" + ], + "genre": "", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "2016届创新班作业\t2113-辅助角公式-20240304修改", + "edit": [ + "20220625\t王伟叶", + "20240304\t徐慧" + ], + "same": [], + "related": [ + "001453" + ], + "remark": "", + "space": "", + "unrelated": [] + }, + "024619": { + "id": "024619", + "content": "求值: $\\tan 36^{\\circ}+\\sqrt{3} \\tan 24^{\\circ} \\tan 36^{\\circ}+\\tan 24^{\\circ}$.", + "objs": [], + "tags": [ + "第三单元" + ], + "genre": "4em", + "ans": "$\\sqrt{3}$", + "solution": "", + "duration": -1, + "usages": [], + "origin": "2025届高一下学期周末卷04-20240304修改", + "edit": [ + "20230308\t王伟叶", + "20240304\t徐慧" + ], + "same": [], + "related": [ + "040188" + ], + "remark": "", + "space": "", + "unrelated": [] + }, + "024620": { + "id": "024620", + "content": "化简: $\\cos 12^{\\circ} \\cos 24^{\\circ} \\cos 48^{\\circ} \\cos 96^{\\circ}$.", + "objs": [], + "tags": [ + "第三单元" + ], + "genre": "4em", + "ans": "$-\\dfrac1{16}$", + "solution": "", + "duration": -1, + "usages": [], + "origin": "2025届高一下学期周末卷05-20240304修改", + "edit": [ + "20230318\t王伟叶", + "20240304\t徐慧" + ], + "same": [], + "related": [ + "040228" + ], + "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