题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031410-16166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031410-65322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031410-66833.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031411-96588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031411-61814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031411-47857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031411-21769.png)
(1)将曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031411-47857.png)
(2)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031410-16166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031411-47857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031412-32734.png)
答案
(2)10
解析
试题分析:解:(1)由ρ=
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031411-21769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031412-42518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031412-87291.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031412-37521.png)
∴ 曲线C表示顶点在原点,焦点在x上的抛物线 (5分)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031413-96128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031413-48532.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031412-37521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031413-51481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031413-48959.png)
点评:主要是考查了极坐标与直角坐标的互化,以及直线参数方程的运用,属于基础题。
核心考点
试题【设直线的参数方程为(t为参数),若以直角坐标系的点为极点,轴为极轴,选择相同的长度单位建立极坐标系,得曲线的极坐标方程为ρ=.(1)将曲线的极坐标方程化为直角坐】;主要考察你对常见曲线的极坐标方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031405-53714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031406-87047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031406-53186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031406-62133.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031406-11752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031359-97927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031359-69939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031400-53844.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031359-97927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031400-53844.png)
(2)已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031400-18237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031400-59905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031401-54478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031401-58914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031401-90020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031352-28828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031352-77383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031352-31830.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031353-31467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031353-75815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031353-42472.png)
(Ⅰ)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031352-31830.png)
(Ⅱ)求点
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031352-77383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031352-31830.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031343-14819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031343-18442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031343-80687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031344-55170.png)
(1)在极坐标系下,曲线C与射线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031344-29939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031344-14226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031344-70598.png)
(2)在直角坐标系下,直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031344-21850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031345-92220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031345-96535.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031344-21850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031335-96679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031335-32698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031336-58701.png)
(I)判断直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031335-96679.png)
(Ⅱ)若点P(x,y)在圆C上,求
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108031336-91038.png)
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