From 9ac8b684c6c865933938fa74f2a4fb69dbe55930 Mon Sep 17 00:00:00 2001 From: wangweiye7840 Date: Wed, 28 Feb 2024 18:16:17 +0800 Subject: [PATCH] =?UTF-8?q?=E5=BD=95=E5=85=A5W20260602=E6=96=B0=E9=A2=98?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 题库0.3/Problems.json | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json index fc0f361e..f0beb300 100644 --- a/题库0.3/Problems.json +++ b/题库0.3/Problems.json @@ -734565,6 +734565,46 @@ "space": "4em", "unrelated": [] }, + "032097": { + "id": "032097", + "content": "已知三个互不相同的实数 $a$、$b$、$c$ 满足 $a+b+c=1$, $a^2+b^2+c^2=3$, 则 $a b c$ 的取值范围为\\blank{50}.", + "objs": [], + "tags": [], + "genre": "填空题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "自拟题目", + "edit": [ + "20240228\t毛培菁" + ], + "same": [], + "related": [], + "remark": "", + "space": "", + "unrelated": [] + }, + "032098": { + "id": "032098", + "content": "已知椭圆 $\\Gamma$ 的离心率是 $\\dfrac{1}{2}$, 长轴长 $4$, 椭圆的中心是坐标原点, 焦点在 $x$ 轴上.\n \\begin{center}\n \\begin{tikzpicture}[>=latex]\n \\draw [->] (-2.5,0) -- (2.5,0) node [below] {$x$};\n \\draw [->] (0,-2.5) -- (0,2.5) node [left] {$y$};\n \\draw (0,0) node [below left] {$O$};\n \\draw (0,0) ellipse (2 and {sqrt(3)});\n \\filldraw (-1,0) circle (0.03) (1,0) circle (0.03) node [below] {$F$};\n \\end{tikzpicture}\n \\end{center}\n (1) 求椭圆 $\\Gamma$ 的标准方程;\\\\\n (2) 已知 $A, B, C$ 是椭圆 $\\Gamma$ 上三个不同的点, $F$ 是椭圆 $\\Gamma$ 的右焦点, 若原点 $O$ 是 $\\triangle ABC$ 的重心, 求 $|FA|+|FB|+|FC|$ 的值;\\\\\n (3) 已知 $T(1,1)$, 椭圆 $\\Gamma$ 四个动点 $M, N, P, Q$ 满足 $\\overrightarrow{MT}=3 \\overrightarrow{TQ}$, $\\overrightarrow{NT}=3 \\overrightarrow{TP}$,求直线 $MN$ 的方程.", + "objs": [], + "tags": [], + "genre": "解答题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "自拟题目", + "edit": [ + "20240228\t毛培菁" + ], + "same": [], + "related": [], + "remark": "", + "space": "4em", + "unrelated": [] + }, "040001": { "id": "040001", "content": "参数方程$\\begin{cases}x=3 t^2+4, \\\\ y=t^2-2\\end{cases}$($0 \\leq t \\leq 3$)所表示的曲线是\\bracket{20}.\n\\fourch{一支双曲线}{线段}{圆弧}{射线}",