题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232658-93783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232659-86106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232658-93783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232659-64235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232659-26037.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232700-71346.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232700-57971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232700-84286.png)
因为圆心(1,0)到直线l的距离为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232700-63699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232658-93783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232700-71346.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232654-82208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232654-73657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232654-60623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232654-82208.png)
在直角坐标系
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232645-94095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232645-57987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232645-61161.png)
(I)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232645-57987.png)
(II)圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232645-57987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232646-93020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232646-70296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232646-66548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232646-41727.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232647-67478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232636-99096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232636-23432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232636-45315.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232636-99096.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232619-70981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232619-61001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232619-94596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232619-91941.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232620-31005.png)
(Ⅱ)若过点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232620-92008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232620-31005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232620-48190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232620-46606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232620-77395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232620-69524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232621-80160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232621-97196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232611-15793.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232611-11758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232612-89520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232612-59617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232612-82332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022232612-18808.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() |
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