名校
解题方法
1 . 已知椭圆
过点
,长轴长为
.
(1)求椭圆
的方程;
(2)直线
与椭圆
交于不同的两点
、
,直线
、
分别与直线
交于点
、
,
为坐标原点且
,求证:直线
过定点,并求出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaba0309c471a4246ca3254a3cdaf17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030c0325fde242e06cee8d270ba89d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2023-07-13更新
|
674次组卷
|
2卷引用:2024届天津市红桥区高三下学期二模数学试卷
2 . 如图,椭圆
:
的离心率为 e ,点
在
上.A,B是
的上、下顶点,直线l与
交于不同两点C,D(两点的横坐标都不为零,l 不平行于 x轴).点E与C关于原点O对称,直线AE与BD交于点F,直线FO与 l 交于点M.
![](https://img.xkw.com/dksih/QBM/2022/5/5/2972987689132032/2976454550331392/STEM/7d8dd6d7-1cb9-45f7-ad10-f6c745095a9b.png?resizew=190)
(1)求 b 的值;
(2)求点 M 到 x 轴的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93c13c9d1a1f85ab7a9b044c669bf53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://img.xkw.com/dksih/QBM/2022/5/5/2972987689132032/2976454550331392/STEM/7d8dd6d7-1cb9-45f7-ad10-f6c745095a9b.png?resizew=190)
(1)求 b 的值;
(2)求点 M 到 x 轴的距离.
您最近一年使用:0次
2022-05-10更新
|
1050次组卷
|
6卷引用:天津市滨海七校2022届高三下学期二模数学试题