题目
题型:不详难度:来源:
已知极坐标系的极点与直角坐标系的原点重合,极轴与直角坐标系的x轴的正半轴重合.设点O为坐标原点, 直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051301-87997.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051302-55142.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051302-44817.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051302-24591.gif)
(Ⅰ)求直线l与曲线C的普通方程;
(Ⅱ)设直线l与曲线C相交于A,B两点,证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051302-98071.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051303-61640.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051303-32334.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051303-75135.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051303-71099.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051304-34994.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051304-36938.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051304-34994.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051304-72842.gif)
(Ⅱ
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051304-47133.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051305-68877.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051305-59484.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051305-87059.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051305-22595.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051306-68499.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051306-66208.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051306-47615.gif)
解析
核心考点
试题【(本小题满分10分)选修4—4:坐标系与参数方程 已知极坐标系的极点与直角坐标系的原点重合,极轴与直角坐标系的x轴的正半轴重合.设点O为坐标原点, 直线(参数)】;主要考察你对常见曲线的参数方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051252-95255.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051252-53677.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051246-11211.gif)
(坐标系与参数方程) 在极坐
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051247-40484.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051247-46983.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051247-40032.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051247-37137.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051248-35118.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051238-93226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051238-83867.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051239-79051.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051239-74457.gif)
的交点为A,B,,则
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051239-54064.gif)
(选修4-4:坐标系与参数方程)
已知直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051226-77468.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051227-94107.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051227-71850.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051227-18452.gif)
(1)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051226-77468.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051226-77468.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051227-89967.gif)
已知圆
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051221-18546.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051221-26749.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051221-32436.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051222-59983.gif)
(Ⅰ)求过极点
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051222-98699.gif)
(Ⅱ)已知直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051222-38298.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051222-98699.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051222-20938.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051221-18546.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108051222-38298.gif)
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