题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015006-22724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015007-16747.png)
点,以极轴为
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015007-37050.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015007-79232.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015007-66121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015006-22724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015007-79232.png)
垂直,则常数
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015007-44645.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015008-88143.png)
解析
试题分析:将直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015006-22724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015008-70344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015008-52547.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015007-66121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015008-52964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015009-12738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015009-58478.png)
核心考点
试题【(坐标系与参数方程选做题)在极坐标系中,直线的方程是,以极点为原点,以极轴为轴的正半轴建立直角坐标系,在直角坐标系中,直线的方程是.如果直线与垂直,则常数 】;主要考察你对极坐标与直角坐标等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015002-95928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015003-21210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014957-34596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014957-59655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014957-65190.png)
A.λ="3," μ=4 | B.λ="3," μ=2 | C.λ="1," μ=![]() | D.λ="1," μ=![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014950-17416.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014951-10486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014951-89329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014947-83443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014935-93435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014935-45281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014935-94028.png)
(1)写出曲线C和直线l的普通方程;
(2)若|PM|,|MN|,|PN|成等比数列,求
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108014935-45281.png)
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