已知曲线
的极坐标方程是
,以极点为原点,以极轴为
轴的正半轴,取相同的单位长度,建立平面直角坐标系,直线
的参数方程为
.
(1)写出直线
的普通方程与曲线
的直角坐标方程;
(2)设曲线
经过伸缩变换
得到曲线
,曲线
上任一点为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f917a2022014d9c19c29eeac84c74e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0887d8be3683cd35394ba2bf74cb90.png)
(1)写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717ff5c70177231ecd74bca07313592c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b9da58357174383cb393e03fb3f946.png)
更新时间:2016-12-04 15:36:50
|
【知识点】 参数方程化为普通方程解读
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】在直角坐标系
中,曲线
的参数方程为
(
为参数).若以该直角坐标系的原点
为极点,
轴的正半轴为极轴建立极坐标系,曲线
的极坐标方程为:
(其中
为常数)
(1)若曲线
与曲线
只有一个公共点,求
的取值范围;
(2)当
时,求曲线
上的点与曲线
上点的最小距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633bfcf07781f7aa87ab1223cf5f2b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21659fcdc4b68adf00ae95c321f0a9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d145e61e2504befc33b452bfe493f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11dec747672851158042b302071f3f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
解答题-问答题
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较易
(0.85)
解题方法
【推荐2】在直角坐标系xOy中,直线l的参数方程为
(t为参数)以坐标原点为极点,以x轴的正半轴为极轴建立极坐标系,曲线C的极坐标方程为
.
(1)求l的普通方程和曲线C的直角坐标方程;
(2)若l与C相交于AB两点,且
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84abf2649f31d5d1602870166cb6f651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0521017247dac2b63ae1befa1962eb.png)
(1)求l的普通方程和曲线C的直角坐标方程;
(2)若l与C相交于AB两点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bba394066bda5ea39120e82605e17c.png)
您最近一年使用:0次