题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-74612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-94470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-25975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-41408.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-64999.png)
②
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-86174.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-19186.png)
④
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024155-66210.png)
其中正确的是( )
A.①③ | B.①④ | C.②③ | D.②④ |
答案
解析
试题分析:令
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024155-83365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024155-56897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024155-84009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024155-13675.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024156-48681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024156-46903.png)
观察图象,可得在图象上任意取两点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024156-95821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-25975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-41408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-86174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024156-81084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-94470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024157-61203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024157-92955.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024157-51848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024157-34741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-25975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-41408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024157-11566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024154-19186.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024144-57910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024144-53116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024144-12769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024145-90408.png)
(1)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024144-57910.png)
(2)设点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024145-89240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024144-57910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024145-88316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024139-32332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024140-44091.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024140-31705.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024134-15405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024134-36503.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024134-10935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024126-71496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024126-91767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024126-96624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024126-54872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024126-23718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024127-53697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024126-71496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024127-77341.jpg)
求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024127-30133.png)
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