题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023358-42475.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023359-30022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023359-15166.png)
(I)求椭圆C的方程;
(II)设Q是椭圆C上的一点,过点Q的直线l交x轴于点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023359-47011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023359-68557.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023359-47471.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023400-70165.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023400-34362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023400-94943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023400-49166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023400-25572.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023401-99897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023401-25485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023401-45237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023401-22074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023401-25485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023401-65645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023402-24843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023402-14087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023402-78896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023402-38373.png)
另解:作
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023402-56628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023403-54370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023400-49166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023403-58886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023403-19490.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023403-60910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023403-49675.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023404-41224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023404-60158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023404-64242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023402-38373.png)
(Ⅱ)易知,直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023404-23314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023405-14867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023405-96717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023405-43337.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023405-20034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023406-43729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023406-11894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023406-57505.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023406-13894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023406-36257.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023407-52449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023407-53061.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023407-51829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023407-52346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023408-68546.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023408-87067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023404-23314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023408-64420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023408-34192.png)
解析
核心考点
试题【设椭圆的左右焦点分别为F1,F2,A是椭圆C上第一象限内一点,坐标原点O到直线AF1的距离为(I)求椭圆C的方程;(II)设Q是椭圆C上的一点,过点Q的直线l交】;主要考察你对曲线与方程的应用等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023351-16433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023351-12412.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023351-89544.png)
(Ⅰ)、若M到点A的距离与M到直线l的距离之比为
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023351-58679.png)
(Ⅱ)、若曲线C2是以C1的焦点为顶点,且以C1的顶点为焦点,试求曲线C2的方程.
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023342-19342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023342-74125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023342-93501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-32248.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-84444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-84007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-58102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-80199.png)
(1)判断直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-84444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-32248.png)
(2)以
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-58102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-80199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023343-84007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023344-58117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023344-58117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023344-93604.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023344-11042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023344-96003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023345-76309.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023327-82499.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023316-84297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-69406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-76915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-69424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-99622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-76915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-30714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023308-21904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023308-71800.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023308-74640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023308-72412.png)
(1)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-76915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023309-45885.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023309-45885.jpg)
(2)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026023307-99622.png)
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