diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json index bb104d28..f308212f 100644 --- a/题库0.3/Problems.json +++ b/题库0.3/Problems.json @@ -690647,6 +690647,56 @@ "space": "", "unrelated": [] }, + "024751": { + "id": "024751", + "content": "函数$y=\\cos (2 x-\\dfrac{\\pi}{4})$, $x \\in[0, \\pi]$的单调增区间是\\blank{50}.", + "objs": [], + "tags": [ + "第三单元" + ], + "genre": "", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "2025届高一下学期周末卷07小测-20240401修改", + "edit": [ + "20230330\t王伟叶", + "20240401\t严捷" + ], + "same": [], + "related": [ + "040417" + ], + "remark": "", + "space": "", + "unrelated": [] + }, + "024752": { + "id": "024752", + "content": "讨论关于实数$x$的方程解的个数:\\\\\n(1) $\\sin x+\\cos x=k$, $x \\in[0, \\pi]$;\\\\\n(2) $\\sin ^2 x+\\cos x=k$, $x \\in[-\\dfrac{\\pi}{2}, \\dfrac{\\pi}{2}]$.", + "objs": [], + "tags": [ + "第三单元" + ], + "genre": "4em", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "2025届高一下学期周末卷08-20240401修改", + "edit": [ + "20230403\t王伟叶", + "20240401\t严捷" + ], + "same": [], + "related": [ + "040548" + ], + "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