题目
题型:不详难度:来源:
椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173930-12733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173931-38221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173931-49939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173931-64775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173931-33835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173931-69584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173932-71679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173932-39489.png)
(1)求椭圆的方程; (2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173932-34972.png)
(3)以
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173932-21047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-51230.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-99119.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-23970.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173931-49939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-75030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-87251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173934-53474.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173934-65520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173934-27517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173934-63403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173935-21990.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173935-71468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173935-57504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173935-50253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173936-12251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173936-17850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173936-91948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-51230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173936-16210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173936-50356.png)
圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-51230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173937-75500.png)
整理得:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173937-78901.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173937-66392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173937-78234.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173938-17123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173938-16332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173938-43009.png)
圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173933-51230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173938-40958.png)
解析
核心考点
试题【(本小题满分12分)椭圆过点,其左、右焦点分别为,离心率,是直线上的两个动点,且.(1)求椭圆的方程; (2)求的最小值;(3)以为直径的圆是否过定点?请证明你】;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/20191023/20191023173922-25183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173922-73603.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173905-89134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-95331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-73846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-49036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-75118.png)
⑴求椭圆C的方程;
⑵设
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-19120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-95456.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-65505.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-95331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173847-55965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173847-20235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173846-95331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173847-85482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173847-20235.png)
⑶在⑵的条件下,证明直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173847-17224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173847-55965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173835-92862.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173836-97837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173836-78089.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173836-96833.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173836-83031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173837-55636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173837-48998.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173837-12131.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173826-62635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173826-58888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173826-24818.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023173826-71795.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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