题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152051-85824.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152051-22011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152051-56292.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152051-91500.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152052-46383.png)
解析
试题分析:由于双曲线的顶点坐标为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152052-23273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152052-53924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152052-50967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152052-95552.png)
设双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152053-41961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152053-30282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152053-17654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152053-41961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152051-91500.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152053-62671.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152053-41961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152054-43088.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152034-14802.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152034-84682.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152035-94269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152035-16579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152035-28028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152035-11969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152035-28028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152037-24673.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152037-17449.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152035-28028.png)
(Ⅱ)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152037-72116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152035-28028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152037-31462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152038-52150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152038-58766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152038-35300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152037-72116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152038-88272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152021-48635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152021-54840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152021-68242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152021-92041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152022-45734.png)
(Ⅰ)求椭圆C的方程;
(Ⅱ)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152022-86181.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152022-11669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152022-32272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152023-46664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152023-76622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152023-45740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-48495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-49592.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-83699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-47268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152011-21759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-48495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-48495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152011-54945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152011-78331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152011-27572.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-48495.png)
(Ⅱ)点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152011-23328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-48495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152011-23328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152012-90361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152012-90361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152010-48495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152012-90361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151956-33080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151956-39216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151956-71120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151957-91743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151957-52338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151957-13013.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151957-15312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151957-14602.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151958-41933.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151958-25915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151958-41933.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151958-20745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151958-77934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151958-48167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151947-21769.png)
(I)若ΔABF2为正三角形,求椭圆的离心率;
(II)若椭圆的离心率满足
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151947-39425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151947-91080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151947-42885.png)
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