题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233017-99243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233018-68966.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233018-76752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233018-62924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233018-94008.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233019-25539.png)
解析
试题分析:由抛物线y2=8x得出其焦点坐标,由|PF|=5结合抛物线的定义得出点P的坐标,从而得到双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233017-99243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233019-93739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233019-24116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233019-25539.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233019-25539.png)
点评:本题主要考查了抛物线的简单性质,双曲线的简单性质,抛物线的定义等.解答的关键是学生对圆锥曲线基础知识掌握的熟练程度.
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233010-73136.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233011-39173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233011-41570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-99213.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-88558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-55976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-86614.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-55976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232953-73494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232953-28036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232953-37733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232954-83117.jpg)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-99213.png)
(Ⅱ)若过点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232954-82037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-99213.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232954-14072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232954-65841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232952-99213.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232955-87964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232955-34199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232955-62338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232956-79825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232942-24561.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232942-59692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232942-85210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232942-58791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232942-59196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-90825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-38628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-71599.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-25470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-71599.png)
(2)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-64385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-75698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232942-85210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-52274.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232943-46440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232944-29572.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232944-34558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232944-86166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232929-76861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232929-14483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232929-14343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232929-76861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232929-99863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232930-98908.png)
(Ⅰ)求椭圆的方程;
(Ⅱ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232930-52894.png)
(Ⅲ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232930-80852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232913-71939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-51630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-46826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-97094.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-99241.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-93882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-18882.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-83388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-85488.png)
(Ⅱ)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-61572.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232914-15387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232915-66892.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232915-28282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232915-82287.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232915-34579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232915-44630.png)
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