题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174440-33521.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174440-85304.png)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174429-72411.gif)
为A、B,以A为圆心,OA为半径的圆与以B为圆心,OB为半径的圆相交于点O、P.
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174430-22570.gif)
(1)求点P的坐标;
(2) 若点P在直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174430-71047.gif)
(3) 在(2)的条件下,设M是椭圆上的一动点,且点N(0,1)到椭圆上点的最近距离为3,求椭圆的方程.
已知椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174419-91407.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174419-45083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174419-21058.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174419-53616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174420-55018.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174420-12701.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174420-55018.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174420-26580.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174419-53616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174420-63994.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174421-33718.gif)
(1)求椭圆的方程;
(2)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174421-83303.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174420-55018.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174421-37290.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174421-35543.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174421-83303.gif)
(3)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174422-94719.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174411-76272.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174411-38086.gif)
(1)若椭圆的离心率为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174411-72475.gif)
(2)若向量
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174411-88709.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174412-33586.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174412-19307.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174359-68168.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174400-32634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174400-32864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174354-32674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174354-89262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023174355-44572.png)
A.![]() | B.![]() | C.2 | D.4 |
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