题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233527-47879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233527-13784.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233527-11549.png)
解析
试题分析:渐近线为
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233527-47879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233528-44077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233527-13784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233528-28269.png)
所以双曲线为
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233528-68898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233527-11549.png)
点评:双曲线焦点在x轴时,渐近线方程为
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233528-94956.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233529-56285.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233516-95588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233516-89786.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233516-95588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233517-41613.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233517-47902.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233516-95588.png)
(1)写出抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233516-95588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233502-16498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-75302.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-73218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-70222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-21374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-46257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-84608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233502-16498.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233502-16498.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-72435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-43499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-66258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-70222.png)
(3)试问
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-43499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-84608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-20919.png)
①曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233459-79452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
③若曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233459-81886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233459-60848.png)
④若曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233500-53623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233500-99907.png)
其中所有正确命题的序号为__ _ __ .
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233448-88481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233448-97251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233448-54984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-36148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-69617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-30150.png)
(1)求椭圆C以及圆O的方程;
(2)当点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-48957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233450-13304.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233438-24426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-10368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-84148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-13186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-87756.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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