题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021435-39092.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021436-61738.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021424-12625.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021424-79945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021424-67937.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021424-35385.png)
(Ⅰ)求动点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021424-27348.png)
(Ⅱ)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021425-98344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021425-89150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021425-40791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021425-96811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021426-75023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021426-19576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021426-35464.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021416-99922.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021416-77305.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021357-46482.jpg)
(I )求动点P的轨迹E的方程;
(II)过点P作圆
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021357-85561.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021342-12544.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021342-73062.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021342-25785.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021342-49272.jpg)
(I )求曲线C1的普通方程;
(II)设A、B为曲线C1与y轴的两个交点,M为曲线C1上不同于A、B的任意一点,若直线AM与MB分别与x轴交于P,Q两点,求证|OP|.|OQ|为定值.
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021324-85135.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021324-83723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021324-38485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021324-72825.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021325-36247.png)
(Ⅱ)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021325-36651.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021325-74642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021325-35067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021325-71999.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021326-85841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021326-46270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021326-56431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021326-91440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026021327-17256.png)
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