题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192854-35719.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192854-18149.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192855-70657.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192855-60249.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192855-38555.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192855-20593.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192855-20593.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192855-45042.gif)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192856-96039.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192856-26810.gif)
直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192856-55662.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192856-59840.gif)
化简得
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192857-97492.gif)
又圆心
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192857-91775.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192856-55662.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192857-40617.gif)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192857-30667.gif)
易知
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192858-95306.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192858-29162.gif)
同理有
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192858-33528.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192858-48921.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192858-43382.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192859-73597.gif)
因
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192859-75565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192859-24477.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192859-19615.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192900-89808.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192900-11458.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192900-53574.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192900-78601.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192901-61016.gif)
因此
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192901-40512.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192850-65197.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192850-65197.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192850-79537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192850-79537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192850-65197.gif)
A.抛物线 | B.双曲线 | C.椭圆 | D.直线 |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192820-65729.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192820-92247.gif)
A.直线 | B.抛物线 | C.双曲线 | D.椭圆 |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192814-82592.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192814-94901.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192814-71557.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192814-41086.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192814-82315.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192814-49673.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192808-61595.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025192804-30924.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
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