名校
解题方法
1 . 已知椭圆
的上下顶点分别为
,
,离心率为
.
![](https://img.xkw.com/dksih/QBM/2022/5/12/2977926716080128/2978535997243392/STEM/52c06ee4e36546d08d79c3e7740dc6a4.png?resizew=200)
(1)求椭圆的标准方程;
(2)过点
且斜率为
的直线
与椭圆交于M,N两点,求证:直线
与直线
的交点T的纵坐标为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37434c0bc2a8f4b8e5f16f16dc3d9b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d503ab387c5cac181bb983989ecd499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/12/2977926716080128/2978535997243392/STEM/52c06ee4e36546d08d79c3e7740dc6a4.png?resizew=200)
(1)求椭圆的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e884ca9429486026caa5e2310b0e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201d7685f19582f5d54f9205e8598d5a.png)
您最近一年使用:0次
2022-05-13更新
|
372次组卷
|
2卷引用:宁夏石嘴山市第三中学2022届高三第四次模拟数学(文)试题
2 . 已知椭圆
的焦距为2c,左、右焦点分别是
,
,其离心率为
,圆
与圆
相交,两圆的交点在椭圆E上.
(1)求椭圆E的方程.
(2)已知A,B,C为椭圆E上三个不同的点,O为坐标原点,且O为△ABC的重心.证明:△ABC的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2df20ba58b96bb43cfee5c968c3600b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0ae9d467de07587346dac12bcec3b4.png)
(1)求椭圆E的方程.
(2)已知A,B,C为椭圆E上三个不同的点,O为坐标原点,且O为△ABC的重心.证明:△ABC的面积为定值.
您最近一年使用:0次
2022-03-26更新
|
1023次组卷
|
6卷引用:宁夏银川市2022届高三质量检测(一模)数学(文)试题
名校
解题方法
3 . 已知椭圆
的左、右顶点分别为
,
,离心率为
,过点
作直线交椭圆于点
,
(与
,
均不重合).当点
与椭圆
的上顶点重合时,
.
(1)求椭圆
的方程
(2)设直线
,
的斜率分别为
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f3c409c807d57ec86a191d236ed343.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/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c454d7cebb5355b61d71cafb47afd72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc085d02ba40a829dfea8e99e7be9b2.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](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/67351fe10fcfc3f9072eec4c60bfaaa5.png)
您最近一年使用:0次
2020-11-15更新
|
1777次组卷
|
8卷引用:宁夏石嘴山市第三中学2022届高三第一次模拟考试数学(理)试题
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