解题方法
1 . 选修4-4:坐标系与参数方程
在直角坐标系
中,曲线
的参数方程
(
为参数) 以
为极点,
轴的非负半轴为极轴建立极坐标系.
(1)求曲线
的极坐标方程;
(2)直线
的坐标方程是
,直线
与曲线
交于点
和
,与直线
交于点
,求
的长.
在直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07df38bd4e32b15a4bef7a0fddb8224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66eb4350904ed2d53b65380b4f5698fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12342b72e971ad283ea84509894e08c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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2 . 在平面直角坐标系
中,圆
的参数方程
(
为参数).以
为极点,
轴的非负半轴为极轴建立极坐标系.
(1)求圆
的极坐标方程;
(2)射线
与圆
的交点为
、
两点,求
点的极坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c12d9f29e2a29c6d6ecba66eb2e9118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7740255408ee3d3ff9370c51c3f24e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2016-12-03更新
|
1293次组卷
|
2卷引用:2015届陕西省宝鸡市九校高三联合检测理科数学试卷
3 . 在极坐标系中,求点
到直线
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2368d7279e06adfdb924b080c6f9a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d992d70f08aa87aa83bafa65fde6d8.png)
您最近一年使用:0次
12-13高二下·陕西宝鸡·期末
4 . 已知曲线
为参数),
为参数).
(1)化
的方程为普通方程,并说明它们分别表示什么曲线;
(2)若
上的点
对应的参数为
,
为
上的动点,求
的中点
到直线
为
参数)距离的最小值.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/516afb380370492b8854b2a4b2ad3712.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/c6b3f1136f4742c09acdc32aeaf65651.png)
(1)化
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/a5c9e59e6207426ca02d760fff8a5418.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/8661cbc427584583a7314595c249f7ed.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/7c7d0397e63c40f2966b078753ef5d67.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/59155c7c7bb24f51b46d490786a6fa56.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/8377b361feac497f9c304018898252bd.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/3ab5c75210f04329ab6e976d629dc9fd.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/f09de742ab964ced81a59c3fe875de02.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/32c1a59dd32f4aeebff67646464dfffc.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580955979776/1572580961918976/STEM/67310fef00604773ba1e2f0617b4a731.png)
参数)距离的最小值.
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2012·福建福州·一模
5 . 选修4—4:极坐标与参数方程
在直角坐标平面内,以坐标原点
为极点,
轴的非负半轴为极轴建立极坐标系.已知点
、
的极坐标分别为
、
,曲线
的参数方程为
为参数).
(Ⅰ)求直线
的直角坐标方程;
(Ⅱ)若直线
和曲线C只有一个交点,求
的值.
在直角坐标平面内,以坐标原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2015/4/30/1572089133432832/1572089139666944/STEM/67b00228eb1846fe9bb3a8645d4b30f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b029b36989dbbde4d7bab923edae56f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed2bbb25bb757f3476f0d53a528a861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4442180c75d5e8835ac01a6996fe32b4.png)
(Ⅰ)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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2016-12-01更新
|
1402次组卷
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3卷引用:2015届陕西西北工业大学附中高三下学期四模考试理科数学试卷
6 . 求直线
和直线
的交点
的坐标,及点
与
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe5e372c2e69a3a6c00cde0c24b52c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6845630eb883e047f3aac14669f2498b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bcec8edf984a50903019044b56bd77f.png)
您最近一年使用:0次
2016-12-01更新
|
695次组卷
|
5卷引用:陕西省黄陵中学2016-2017学年高二(普通班)下学期期末考试数学(文)试题
7 . 选修4-4:坐标系与参数方程
在极坐标中,直线
的方程为
,曲线
的方程为
.
(1)求直线
与极轴的交点到极点的距离;
(2)若曲线
上恰好有两个点到直线
的距离为
,求实数
的取值范围.
在极坐标中,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12cd7e1f6e2efc0633419599d07061da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c417496c707ec0845c3f4949d0842e3.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2016-12-04更新
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2卷引用:2016届陕西省安康市高三第三次联考理科数学试卷
8 . 以坐标原点
为极点,以
轴正半轴为极轴,建立极坐标系,已知曲线
的极坐标方程为
,将曲线
:
(
为参数),经过伸缩变换
后得到曲线
.
(1)求曲线
的参数方程;
(2)若点
的曲线
上运动,试求出
到直线
的距离的最小值.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d49f619e86d0bd6e4210c004d718c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a682446175c3ff06919f64a94ac597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a91a72435f1cebe358ef05499010d43a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2017-02-16更新
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