题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180420-87848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180420-47088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180421-99272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180421-80247.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
答案
解析
由椭圆的方程
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180422-38062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180422-56593.png)
由双曲线的方程
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180423-63930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180423-42761.png)
抛物线的离心率为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180423-63005.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180423-13835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180424-56345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180424-74667.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180424-82521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180424-79495.png)
故正确答案为C
核心考点
举一反三
已
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180411-37823.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180411-74688.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180411-55626.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180411-18805.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180411-85456.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180411-82034.gif)
(1)求椭圆C的方程;
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180412-11354.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180412-90248.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180412-27131.gif)
如图,已知
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180355-65008.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180355-38852.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-35574.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-76786.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-24769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-35574.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-75183.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180355-65008.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-68983.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180357-31152.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180357-58653.gif)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-35574.gif)
(Ⅱ)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180355-38852.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180357-20915.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180356-35574.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180357-42740.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180357-48231.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180358-74417.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180357-48231.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180358-74431.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180358-74495.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180358-28045.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180341-17400.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180342-24470.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180342-67885.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180341-17400.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180342-23534.gif)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180341-17400.gif)
(Ⅱ)若过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180342-22623.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180343-31299.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180341-17400.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180343-69293.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180343-73867.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180343-32956.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180324-49639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180324-36208.png)
A.4 | B.5 | C.2 | D.1 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180314-65499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180315-23140.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180315-79770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180315-92905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180316-50362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180315-79770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180315-92905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180316-50362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023180316-50362.png)
A.![]() | B.3 | C.![]() | D.![]() |
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