题目
题型:不详难度:来源:
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答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214805-82395.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214806-14215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214806-45619.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214806-82476.gif)
即点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214806-14215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214806-34999.gif)
设点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214806-16748.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214807-88343.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214807-99463.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214807-40059.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214807-67857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214808-99189.gif)
得
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214808-77156.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214805-82395.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214808-55180.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214809-39357.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214805-82395.gif)
(Ⅱ)由(Ⅰ)知,点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214809-32959.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214809-86660.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214809-46204.gif)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214809-54872.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214810-56051.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214813-78812.gif)
点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214812-80520.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214804-36910.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214813-90303.gif)
又由
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214814-45391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214814-13812.gif)
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核心考点
试题【(本题满分12分) 直角三角形的直角顶点为动点,,为两个定点,作于,动点满足,当点运动时,设点的轨迹为曲线,曲线与轴正半轴的交点为.(Ⅰ) 求曲线的方程;(Ⅱ)】;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/20191023/20191023214751-11385.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214752-71920.jpg)
直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214752-52371.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214752-41083.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214752-71920.jpg)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214742-98004.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214742-43911.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214742-16128.gif)
A.[-7 ,8] | B.[![]() ![]() | C.[![]() ![]() | D.(![]() ![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214734-80123.gif)
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A.
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214735-94897.gif)
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A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023214725-37037.gif)
A.椭圆 | B.线段 | C.椭圆或线段 | D.双曲线 |
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