题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021453-62897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021454-12063.png)
答案
解析
试题分析:利用极坐标与直角坐标的互化关系得,点
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021454-90848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021454-73113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021454-10669.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021447-36009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021447-21683.png)
(Ⅰ)求曲线C和直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021447-60586.png)
(Ⅱ)若|PM|,|MN|,|PN |成等比数列,求实数a的值.
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021438-99363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021438-46020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021438-33050.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021438-93428.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021439-42718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021439-73381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021439-93509.png)
(1)求曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021438-46020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021439-73381.png)
(2)设曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021438-46020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021439-73381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021439-54721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021439-96190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021440-97697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021432-40145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021432-85434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021432-65909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021432-29053.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021433-38453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021425-21305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021425-35063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021426-41216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021426-19579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021426-21869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021425-21305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021426-41216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021426-25826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021427-44320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021415-80187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021415-35348.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021415-92041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021415-37730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021415-84838.png)
(Ⅰ)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021415-35348.png)
(Ⅱ)直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021416-48405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021416-78489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021416-34591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021415-35348.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021416-68356.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021416-48405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021416-92932.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108021417-97629.png)
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