题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232531-53224.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232532-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232533-25621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232533-60049.png)
【考点定位】 本题考查了双曲线的渐近线及点到直线的距离公式,如果能画图可简化计算,属于简单题.
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232525-22740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232525-19258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232525-75341.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232514-54601.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232514-42480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232514-42312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232514-42480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232514-76863.jpg)
(I)若点C的纵坐标为2,求
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232515-40735.png)
(II)若
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232515-39450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232457-90378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232458-86214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232458-54415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232458-10064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232458-19046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232459-78133.jpg)
(Ⅰ) 若
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232459-18183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232459-66683.png)
(Ⅱ)若点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232459-30505.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232500-49156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232500-64204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232500-62988.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232500-89525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232452-71611.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232452-45313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232453-79710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232442-93223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232442-37489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232443-84921.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232443-25898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232443-95479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232443-36533.png)
(Ⅰ)当点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232444-84159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232444-45606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232444-22898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232444-29030.png)
(Ⅱ)当点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232444-84159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232445-55918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232445-55918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025232444-22898.png)
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