题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151722-53885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151722-84274.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151722-93560.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151722-93560.png)
答案
解析
试题分析:由题意可知
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151723-15322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151723-56462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151723-62621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151723-84812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151723-23626.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151710-95409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151710-74361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-94854.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-73068.png)
(I)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-68568.png)
(II)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-32570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-63715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-15175.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-47115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-43006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151711-47137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151656-63826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151656-28678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151656-48676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151657-11283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151657-43724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151657-20999.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151645-72498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151645-45635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151645-35504.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151646-32650.png)
(Ⅱ)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151646-38192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151646-74244.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151646-22407.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151647-54624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151647-58720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151647-83538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151634-95277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151635-51267.png)
(I)求椭圆C的方程;
(II)若斜率为k的直线过点M(2,0),且与椭圆C相交于A, B两点.试探讨k为何值时,三角形OAB为直角三角形.
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-68775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-45812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-66108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-45812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-20655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-46562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-50857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-18097.png)
(Ⅰ)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-20655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-20284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-84033.png)
(Ⅱ)求线段
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-48431.png)
(Ⅲ)当点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-66108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023151620-48431.png)
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