1 . 选修4—4:坐标系与参数方程
已知倾斜角为
的直线
经过点P(1,1).
(Ⅰ)写出直线
的参数方程;
(Ⅱ)设直线
与直线
相交于
两点,求
的值.
已知倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa42b56b1c92689a080b58cb603a642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6e3068d45760efcd652868d4fdc325.png)
(Ⅰ)写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6e3068d45760efcd652868d4fdc325.png)
(Ⅱ)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6e3068d45760efcd652868d4fdc325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311ba39e38989df88190ac6b07cf2855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a9f72141dc3758484c75488dec62be.png)
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名校
2 . 选修4-4:坐标系与参数方程
已知直线
(
为参数),圆
,以坐标原点为极点,
轴的正半轴为极轴建立直角坐标系.
(1)求圆
的极坐标方程,直线
的极坐标方程;
(2)设
与
的交点为
,求
的面积.
已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e96893f698d709dc713478fef1733f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab91474402691832777fc809ab85971e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b35d4375f929aa799bab3ad73b56e4.png)
您最近一年使用:0次
2016-12-04更新
|
452次组卷
|
5卷引用:2017届广西南宁二中等校高三8月联考数学(理)试卷1
9-10高二下·黑龙江鹤岗·期中
3 . 过点
作倾斜角为
的直线与曲线
交于点
,
求
的最小值及相应的
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749e38a6bdf1096684de28e182399761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://img.xkw.com/dksih/QBM/2010/5/19/1569735349043200/1569735353950208/STEM/c4a27593a1954b6bbd53aa9523cc9445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5f382f5017a9ce20f011b9220c723f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
您最近一年使用:0次
4 . 已知极坐标系的极点在直角坐标系的原点处,极轴与x轴的正半轴重合,直线l的极坐标方程为:
,曲线C的参数方程为:
(α为参数).
(I)写出直线l的直角坐标方程;
(Ⅱ)求曲线C上的点到直线l的距离的最大值.
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592985382912/1572592991256576/STEM/b4eb1ef1540b4319b529f9362b721d0e.png)
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592985382912/1572592991256576/STEM/c8262a6c27324291b71d920c5333965c.png)
(I)写出直线l的直角坐标方程;
(Ⅱ)求曲线C上的点到直线l的距离的最大值.
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