解题方法
1 . 已知椭圆
的左、右焦点分别为
、
,离心率
,
为椭圆
上的任意一点(不含长轴端点),且△
面积的最大值为
.
(1)求椭圆
的方程;
(2)设直线
R
交椭圆
于
、
两点,试探究:点
与以线段
为直径的圆的位置关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.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/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5a8e1bc9748e5519dcd9981b7eb251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/07dcf40255181789312219de680a2f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/c3492b97c5b85da3965f86239ede4e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2 . 设椭圆E的方程为
,点O为坐标原点,点A的坐标为
,点B的坐标为
,点M在线段AB上,满足
,直线OM的斜率为
.
(1)求E的离心率e;
(2)设点C的坐标为
,N为线段AC的中点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1f08e04cf0b6a9afea66ce590ba00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad29801f799532ee7dda9658c30e373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca45bff8f7dd6a8cc5843237c072a590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fd7940df8100511c9b98ed85d014a3.png)
(1)求E的离心率e;
(2)设点C的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3120582c4f0b7a6f55a5f95cab654a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f479d987bc7abd828c64f9dc745836ab.png)
您最近一年使用:0次
2016-12-03更新
|
2633次组卷
|
9卷引用:2023版 北师大版(2019) 选修第一册 名师精选卷 第六单元 椭圆 A卷
2023版 北师大版(2019) 选修第一册 名师精选卷 第六单元 椭圆 A卷2023版 苏教版(2019) 选修第一册 名师精选卷 第六单元 椭圆A卷2015年全国普通高等学校招生统一考试文科数学(安徽卷)黑龙江省牡丹江市第一高级中学2018届高三10月月考数学(文)试题智能测评与辅导[文]-椭圆(已下线)专题9.6 直线与圆锥曲线(精练)-2021年高考数学(文)一轮复习学与练(已下线)第04讲 圆锥曲线的综合问题(讲)(已下线)专题24 解析几何解答题(文科)-3专题37平面解析几何解答题(第一部分)
2012·陕西延安·模拟预测
名校
3 . 已知椭圆
过点
,且离心率为
.
(Ⅰ)求椭圆
的方程;
(Ⅱ)
为椭圆
的左、右顶点,直线
与
轴交于点
,点
是椭圆
上异于
的动点,直线
分别交直线
于
两点.证明:
恒为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e2f2d391b1e6304eb2bba560d0ccdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602b0c41e4fbeccdcb35b5cb8d6575e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b114dd62d9fe5538a5e7335c3c5642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ece03cb7db90b8cc4836fb63f943ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2d7e1d2b4e8e07148031a06c6cc59e.png)
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