名校
解题方法
1 . 已知椭圆
过点
,顺次连接椭圆的四个顶点得到的四边形的面积为
,点
.
(1)求椭圆
的方程.
(2)已知点
,是椭圆
上的两点.
(ⅰ)若
,且
为等边三角形,求
的面积;
(ⅱ)若
,证明:
不可能为等边三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349e6276d5832267c881836fa038b6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed0325097927b92a6458bfbb0667b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f333263260646c494225db8a7476c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
2017-05-20更新
|
919次组卷
|
3卷引用:河北省衡水中学2018届高三数学理科三轮复习系列七-出神入化7
名校
2 . 已知椭圆
:
的四个顶点组成的四边形的面积为
,且经过点
.
![](https://img.xkw.com/dksih/QBM/2019/3/23/2166836469366784/2168057961062400/STEM/430bea2feb9549dfb1c6dc293ca12e2e.png?resizew=193)
(1)求椭圆
的方程;
(2)若椭圆
的下顶点为
,如图所示,点
为直线
上的一个动点,过椭圆
的右焦点
的直线
垂直于
,且与
交于
,
两点,与
交于点
,四边形
和
的面积分别为
,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe8530b8e246a9a5ec9fe3b9c347d5a.png)
![](https://img.xkw.com/dksih/QBM/2019/3/23/2166836469366784/2168057961062400/STEM/430bea2feb9549dfb1c6dc293ca12e2e.png?resizew=193)
(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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b67f38247dea57c3167f02de51cf3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb556e962e111e59c345be7240e202c0.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/50524aaa1503092bd18419de6d851541.png)
您最近一年使用:0次
2016-12-04更新
|
3039次组卷
|
8卷引用:河北省衡水中学2018届高三上学期八模考试数学(理)试题
名校
解题方法
3 . 已知椭圆
过点
,离心率为
,点
分别为其左右焦点.
(1)求椭圆
的标准方程;
(2)若
上存在两个点
,椭圆上有两个点
满足
三点共线,
三点共线,且
,求四边形
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e2f2d391b1e6304eb2bba560d0ccdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd670bd3726ea58ab5c46c245d05559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d676ff4bf2f8e136835a0a702ebe53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c485045b8cc718cfabee23fe984f82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86859f48d33b5163960bef221b189b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99393efa04579f3db5cf4f7e319f0440.png)
您最近一年使用:0次
2016-12-03更新
|
1437次组卷
|
6卷引用:2016届河北省邯郸一中高三下学期第一次模拟文科数学试卷
解题方法
4 . 已知椭圆
经过点
,离心率为
.
(1)求椭圆
的方程;
(2)不垂直与坐标轴的直线
与椭圆
交于
两点,线段
的垂直平分线交y轴于点
,若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e684712aade8dcebb62716843791034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)不垂直与坐标轴的直线
![](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/eff26171e5cdbb425f8c7642f3a1ec7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afe17db75cdacde06262271d174307d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
12-13高三·天津·阶段练习
解题方法
5 . 已知椭圆
的一个焦点为
且过点
.
![](https://img.xkw.com/dksih/QBM/2018/8/22/2015983746736128/2016726972760064/STEM/35a34bb8ba694bc68badacce0e4c9699.png?resizew=222)
(Ⅰ)求椭圆
的方程;
(Ⅱ)设椭圆
的上下顶点分别为
是椭圆上异于
的任一点,直线
分别交
轴于点
,若直线
与过点
的圆
相切,切点为
.
证明:线段
的长为定值,并求出该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17618d8d22ebb3fd6835a7eb139b4f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27208f7c8d1f32587bcb0a52dbc40c56.png)
![](https://img.xkw.com/dksih/QBM/2018/8/22/2015983746736128/2016726972760064/STEM/35a34bb8ba694bc68badacce0e4c9699.png?resizew=222)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(Ⅱ)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bebf4417f17ba00e6e1f98ff4c5717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941580b384bf5aa122b56dec5f0e5cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be452c8bdea6b4e4c7a6d96e9dc6a51c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
证明:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.png)
您最近一年使用:0次
2016-12-02更新
|
1250次组卷
|
3卷引用:河北省衡水中学2020届高三高考数学(文科)一模试题
2012·河北·一模
解题方法
6 . 已知方向向量为
的直线l过椭圆
的焦点以及点
,直线l与椭圆C交于 A 、B两点,且A、B两点与另一焦点围成的三角形周长为
.
(1)求椭圆C的方程.
(2)过左焦点
且不与x轴垂直的直线m交椭圆于M、N两点,
(O坐标原点),求直线m的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6e29f20f663e2b227557e22546dd98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25c39d90e723c654b028d4286d05d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee05b3210c8964deef8ff771173d288.png)
(1)求椭圆C的方程.
(2)过左焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4f325af38df329028f8791eb13e386.png)
您最近一年使用:0次
2012·河北唐山·一模
解题方法
7 . 中心在原点O,焦点
在x轴上的椭圆E经过点C(2, 2),且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d51ae46ce7f78185af92c923c1ac35.png)
(1)求椭圆E的方程;
(2)垂直于OC的直线l与椭圆E交于A、B两点,当以AB为直径的圆P与y轴相切时,求直线l的方程和圆P的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/979153fd6f13481ca1dbd53dc9349518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d51ae46ce7f78185af92c923c1ac35.png)
(1)求椭圆E的方程;
(2)垂直于OC的直线l与椭圆E交于A、B两点,当以AB为直径的圆P与y轴相切时,求直线l的方程和圆P的方程.
您最近一年使用:0次
2012·河北石家庄·一模
解题方法
8 . 已知焦点在
轴上的椭圆C1:
=1经过A(1,0)点,且离心率为
.
(1)求椭圆C1的方程;
(2)过抛物线C2:
(h∈R)上P点的切线与椭圆C1交于两点M、N,记线段MN与PA的中点分别为G、H,当GH与
轴平行时,求h的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e84aa1cf44d13200c785111c2b410a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆C1的方程;
(2)过抛物线C2:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e31401ce101641b9022a4c6a191d88d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次