题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103353-14709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103353-25946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103353-25946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103353-71901.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103354-69883.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103354-69883.png)
∵FM的中垂线与抛物线交于两点,∴这两点可以作为圆心,这样的圆有两个.
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103349-17949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103349-47770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103344-67016.png)
直线交抛物线于
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103345-12081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103345-43231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103345-62595.png)
坐标为2,则该抛物线的准线方程为 .
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103337-86632.png)
A.![]() | B.![]() | C.![]() | D.![]() |
已知定点
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103326-14005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103326-58791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103327-43383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103327-29072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103327-90355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103327-18631.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103328-23404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103328-37581.jpg)
(I)求动点
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103328-23404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103328-60340.png)
(Ⅱ)设倾斜角为
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103328-20265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103329-87039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103327-90355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103328-60340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103329-55981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103327-18631.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103329-14322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103329-81200.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103330-34787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-95434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-77989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-20559.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-16101.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-85649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-92494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-92491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-72474.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024103323-81479.png)
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