题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-40530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-98991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-40530.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-99184.png)
解析
试题分析:关键是已知条件告诉我们什么?“以C为圆心,1为半径的圆上有两上不同的点到原点的距离为2”这句话说明“以C为圆心,1为半径的圆与以原点为圆心,2为半径的圆相交”,即
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-44139.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-98991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-21487.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225019-47197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225019-49312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225019-45605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225018-40530.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225005-51416.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225005-95988.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225005-11974.png)
⑴求椭圆E的方程;
⑵设P是椭圆E上一点,过P作两条斜率之积为
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225005-95988.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225005-65196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225005-65196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025225005-75361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224957-15258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224957-61809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224957-29347.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224957-15258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224950-17104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224950-70459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224950-95865.png)
(1)求抛物线的标准方程;
(2)若抛物线与直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224950-91807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224950-98390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224951-83116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224951-80170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224936-91626.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224936-37704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224936-79650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224937-32146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224937-69753.png)
(1)求椭圆方程;
(2)点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224937-60398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224937-20436.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-10100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224937-60398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224937-20436.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-10100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-78799.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224937-32146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-78799.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-70806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-70806.png)
(3)过椭圆的上顶点作互相垂直的两条直线分别交椭圆于另外一点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-62466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224938-37552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224939-94221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224924-36908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224924-73996.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224924-66723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224924-28867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-53667.png)
(1)求椭圆的方程;
(2)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-49399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-47787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-71269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-47787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-53667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-56266.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224926-69631.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-71269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224926-50105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224925-47787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224926-20567.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224926-15698.png)
(3)求
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025224927-75755.png)
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