1 . 已知方程
表示焦点在y轴上的椭圆,则实数k的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9cf53ce11d184ef254ab7592a08153.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
2 . 法国数学家蒙日在研究圆锥曲线时发现:椭圆
的任意两条互相垂直的切线的交点
的轨迹是以原点为圆心,
为半径的圆,这个圆称为蒙日圆.若矩形
的四边均与椭圆
相切,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da001dad7941e6c9858637d7b62cec59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb27e0da15121c20426db4f348b97470.png)
A.椭圆![]() ![]() |
B.过直线![]() ![]() ![]() ![]() ![]() ![]() |
C.若圆![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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解题方法
3 . 以椭圆
的长轴端点为焦点、以椭圆焦点为顶点的双曲线方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c763113a1fc48e8acc83787b8cd24eec.png)
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4 . 已知椭圆
过点
,焦距为
.过
作直线l与椭圆交于C、D两点,直线
分别与直线
交于E、F.
(1)求椭圆的标准方程;
(2)记直线
的斜率分别为
,证明
是定值;
(3)是否存在实数
,使
恒成立.若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d03fa28c117649b0fdfe17eed7b583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeda89601db5178bf6f48eb93ef5820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
(1)求椭圆的标准方程;
(2)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeda89601db5178bf6f48eb93ef5820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0002e26d1bc3291c9c0004ef0cf9c537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7007702bb816d842023ff17e7e8a9d0e.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba14f397c168b2e7fe26b5e38f1bb50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2024-03-06更新
|
480次组卷
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2卷引用:广西''贵百河“2023-2024学年高二下学期4月新高考月考测试数学试卷
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5 . 在平面直角坐标系xOy中,椭圆
的左焦点为
,点
在椭圆上,
的中点为
,若
,
,则椭圆离心率的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040d5370fb66ec15965bc5aee94c335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfbb85b8bc94d742e1e1448f57f14219.png)
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2024-03-03更新
|
980次组卷
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4卷引用:广西南宁市第二中学·柳州高级中学2023-2024学年高二下学期5月联考数学试题
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解题方法
6 . 已知椭圆的左右焦点分别为
,
为椭圆上的点,若
,
,则椭圆的离心率等于
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2024-01-30更新
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343次组卷
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2卷引用:广西壮族自治区百色市德保县德保高中2023-2024学年高二下学期3月月考数学试题
7 . 已知椭圆C:
的离心率为
,左、右顶点分别为A、B,过点
的直线与椭圆相交于不同的两点P、Q(异于A、B),且
.
(1)求椭圆C的方程;
(2)若直线AP、QB的斜率分别为
、
,且
,求
的值;
(3)设
和
的面积分别为
、
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d195911a91d12edd5685f6cd963fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dddd06a88839dc33edcea74128743ae.png)
(1)求椭圆C的方程;
(2)若直线AP、QB的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bc0ee0a95fab04edf648026f14b9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a551505ae42b49904bab59b17012d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9c5ae63072e1684cf1c242c8133d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59c4295f918205f5598ecc9a96d8867.png)
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2024-01-19更新
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4卷引用:广西示范性高中2023-2024学年高二下学期3月调研测试数学试卷
8 . 已知椭圆
的右焦点为
,短轴长为2.过点
且不平行于坐标轴的直线
与椭圆
交于
两点,线段
的中点为
.
(1)求椭圆
的方程;
(2)证明:直线
的斜率与直线
的斜率的乘积为定值;
(3)延长线段
与椭圆
交于点
,若四边形
为平行四边形,求此时直线
的斜率及四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)延长线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
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|
311次组卷
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2卷引用:广西百色市平果市铝城中学2023-2024学年高二下学期3月份测试数学试卷
名校
解题方法
9 . 已知椭圆
,焦距为2,离心率
.
(1)求椭圆
的方程;
(2)若椭圆
的左焦点为
,椭圆上A点横坐标为
,求椭圆的长轴长、短轴长及
的面积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2641297cb9bbcfcfcba99bf78efbaa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e381511007cf0b3fa48481e2824cdbb.png)
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2024-02-02更新
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2489次组卷
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4卷引用:广西壮族自治区玉林市博白县五校2023-2024学年高二上学期12月联考数学试卷
广西壮族自治区玉林市博白县五校2023-2024学年高二上学期12月联考数学试卷宁夏回族自治区银川市贺兰县第一中学2023-2024学年高二上学期期末复习数学试题(三)(已下线)专题27 直线与椭圆的位置关系及椭圆的弦长问题、面积问题(期末大题1)2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)(已下线)3.1.2 椭圆的简单几何性质【第一练】“上好三节课,做好三套题“高中数学素养晋级之路
解题方法
10 . 设
分别是椭圆
的左、右焦点,当
时,点P在椭圆上,且
.
(1)求椭圆C的方程;
(2)直线
与椭圆C交于A,B两点,若
,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b104867a12d24a353d94858c2fa17c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e147db8fd5055afb304984ec9c39999.png)
(1)求椭圆C的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e3436f597aee6cb8a51e93d196c379.png)
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