题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023841-90535.png)
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A.![]() ![]() | B.![]() | C.![]() | D.![]() ![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023842-49101.png)
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核心考点
举一反三
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(Ⅰ)求△ABC顶点C的轨迹方程;
(Ⅱ)是否存在圆心在原点的圆,只要该圆的切线与顶点C的轨迹有两个不同交点M,N,就一定有
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023758-14093.png)
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