题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161525-63619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161525-67985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161526-74002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161526-74002.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161526-48830.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161526-74002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161526-74002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161526-48830.png)
核心考点
试题【已知椭圆(a>b>0)的左右焦点分别为F1,F2,P是椭圆上一点。PF1F2为以F2P为底边的等腰三角形,当60°<PF1F2120°,则该椭圆的离心率的取值范】;主要考察你对椭圆的定义与方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161508-18569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161508-66891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161509-12563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161509-36969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161509-25791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161509-12563.png)
A.0个 | B.1个 | C.2个 | D.4个 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161452-84663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161453-25354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161453-93735.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161453-70296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161453-72918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161454-27982.png)
已知直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161438-58949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161439-89387.png)
(Ⅰ)若椭圆的离心率为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161439-42317.png)
(Ⅱ)若向量
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161439-75097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161439-66051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161440-44971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161434-13346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161434-73177.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161434-12598.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-92180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-79822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-34110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-96716.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-83828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-46123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-37120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-31355.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-92180.png)
(Ⅱ)若点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-38656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-92180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-34110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-96716.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-56399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-90813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-17968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-35115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-54530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-40052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-56384.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-71151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161423-71151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023161422-92180.png)
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