题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181438-72489.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181439-10603.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181439-76679.gif)
(1)求椭圆C的标准方程
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181439-80564.gif)
(2)已知圆O:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181439-79388.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181440-14253.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181440-59245.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181440-77851.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181441-90341.jpg)
得的弦长的取值范围是
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181441-66825.gif)
解析
核心考点
试题【已知F是椭圆C的一个焦点,且椭圆C上的点到点F的最大距离为8(1)求椭圆C的标准方程;(2)已知圆O:,直线. 求当点在椭圆C上运动时,直线 被圆O所截得的弦长】;主要考察你对椭圆的定义与方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181425-24523.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181426-79262.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181425-24523.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181426-64278.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181426-26051.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181425-24523.gif)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181425-24523.gif)
(Ⅱ)已知直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181426-67559.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181426-26051.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181426-67559.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181425-24523.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181427-58584.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181427-16237.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181427-31410.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181420-33583.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181420-70304.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181421-13136.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181414-88403.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181414-52071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181415-27764.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181415-88747.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181415-94954.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181415-70377.gif)
(1)求椭圆方程
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181416-47790.gif)
已知椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181403-62193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181404-34243.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181404-81665.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181404-81635.gif)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181403-62193.gif)
(2)已知圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181404-78034.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181404-51172.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181405-88992.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181405-99240.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181405-75843.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181403-62193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181405-88992.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181404-78034.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181405-88992.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181404-78034.gif)
已知点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181340-30368.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181340-91286.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181340-73192.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181341-47569.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181341-22621.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181341-95892.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181341-95892.gif)
(Ⅱ)若离心率为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181341-13481.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181342-78174.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181341-95892.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181341-22621.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181342-40277.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181342-59928.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181342-49937.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023181343-57733.gif)
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