题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011408-26485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011408-26536.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011409-91836.png)
解析
试题分析:设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011409-13235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011409-31994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011409-31851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011410-27130.png)
则点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011410-94209.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011410-34174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011410-15146.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011411-32324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011411-91632.png)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011411-41086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011411-67173.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011411-96539.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011412-40875.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011412-57362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011412-65069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011409-91836.png)
点评:本题主要考查直线与双曲线的综合应用,这类综合应用题的特点是:计算过程特别复杂、繁琐。因为我们在计算的过程中一定要耐心、认真、细致。尽量做到能得分的绝不因为计算错误而失分。
核心考点
举一反三
已知点F( 1,0),
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011359-53981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011400-35064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011400-92597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011400-21423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011400-78535.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011353-42296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011353-27472.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011353-56224.png)
A.![]() | B.4 | C.![]() | D.8 |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011349-15157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011349-71864.png)
已知一条曲线上的点到定点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011334-92468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011334-39292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011324-77548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011325-84664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011325-56777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026011325-87236.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
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