题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213202-50956.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213202-36167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213203-65739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213203-74941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213203-87359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213204-68578.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213204-58694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213204-34482.png)
A.1 | B.2 | C.3 | D.4 |
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213203-87359.png)
解析
试题分析:根据椭圆定义知
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213204-15997.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213205-32303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213205-57038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213205-52425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213206-36269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213206-83661.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213206-37847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213205-52425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213206-24365.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213151-94159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213151-75787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213151-78358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213151-65303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213151-68160.png)
A.必在圆![]() |
B.必在圆![]() |
C.必在圆![]() |
D.必在圆![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213139-79479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213139-29947.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213140-64903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213140-68371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213140-11282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213140-64903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213140-36974.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213140-11282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213141-65752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213141-17408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213141-65752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213141-82365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213141-50480.png)
A.![]() | B.![]() |
C.![]() | D.以上都不正确 |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213126-79301.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213126-78450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213126-50464.png)
(1)求椭圆的方程;
(2)若点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213127-46317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213127-27987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213127-67202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213127-46317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213127-90285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213128-71750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213128-63112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213128-84292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213128-74992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213129-14463.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213129-70307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213127-27987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213109-27303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213109-46294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213109-39805.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213110-93593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213110-84571.png)
作直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213110-92265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213110-40138.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213111-26392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213111-12423.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213111-48813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213109-46294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213111-68339.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213110-92265.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213112-24223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213112-47357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213112-92942.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213112-81405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213112-47357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213112-42385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213113-27044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213112-42385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213110-92265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-72807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-20405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-23167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-34927.png)
(1)求椭圆的标准方程;
(2) 以椭圆的长轴为直径作圆
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-31653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213053-44238.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213053-25400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213053-70578.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-20405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-31653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213053-51233.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213054-20300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213054-86813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213052-31653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025213053-70578.png)
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