选修4-4:坐标系与参数方程
在平面直角坐标系
中,曲线
的参数方程为
(
为参数,
),以
为极点,
轴正半轴为极轴建立极坐标系,已知曲线
的极坐标方程为
.
(1)若
,判断两曲线的位置关系;
(2)若曲线
上的点到曲线
的最大距离为3,求
的值.
在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/accd297532ef1f1dd97e4b2b6beccabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ba6b6aa6c3f9faba6b03bc193a6e61.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79bcb3608e74a3c394ae22e708ef448.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45767ebe3415761178db9b024da09b00.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
更新时间:2018-01-18 21:31:15
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】在直角坐标系xOy中,直线l的参数方程为
(t为参数,
),曲线C的参数方程为
(
为参数,
),以坐标原点为极点,x轴的正半轴为极轴建立极坐标系.
(1)求曲线C的极坐标方程;
(2)设直线l与x轴交于点P,与曲线C交于两点A,B.求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ac10ec0f5c9715280c48430d9ed15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c516619a5b3c6676e6734efa754e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0358f447dde1e70052e2e23a298e02da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c1592e2f4c18943d1c5321959d1801f.png)
(1)求曲线C的极坐标方程;
(2)设直线l与x轴交于点P,与曲线C交于两点A,B.求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01db917a6fa38b67551cf2d911a1dd76.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】在平面直角坐标系
中,已知直线
的参数方程为
(
为参数),椭圆
的参数方程为
(
为参数)
(1)将直线
的参数方程化为极坐标方程;
(2)设直线
与椭圆
相交于
,
两点,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a1d4dd7d5b84dc481454eb729813066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/755654cb5087c4cdaf0e240319b3ffed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(1)将直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】在平面直角坐标系
中,曲线
的参数方程为
,(
为参数).以坐标原点为极点,
轴的正半轴为极轴建立极坐标系,圆
的极坐标方程为
.
(1)求
的普通方程,
的直角坐标方程;
(2)判断曲线
与圆
的公共点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab827ad6d12c0c00f09f880425a18b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd8dc7c8ad282702a925c291fee3ecda.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)判断曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】在极坐标系中,曲线C的方程为
,点
.
(1)以极点为坐标原点,极轴为x轴的正半轴建立平面直角坐标系,求曲线C的直角坐标方程,点R的直角坐标;
(2)设P为曲线C上一动点,以PR为对角线的矩形PQRS的一边垂直于极轴,求矩形PQRS周长的最小值,及此时点P的直角坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf07cbfdfb30be42ff15e893d44971b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db22ac4ebe67566b61eef762ea24b082.png)
(1)以极点为坐标原点,极轴为x轴的正半轴建立平面直角坐标系,求曲线C的直角坐标方程,点R的直角坐标;
(2)设P为曲线C上一动点,以PR为对角线的矩形PQRS的一边垂直于极轴,求矩形PQRS周长的最小值,及此时点P的直角坐标.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】【选修4-4:坐标系与参数方程】
在直角坐标系xoy中,曲线C1的参数方程为
,以坐标原点为极点,x轴的正半轴为极轴,建立极坐标系,曲线C2的极坐标方程为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d903f5abce683cf8f5fc65b29ef910a9.png)
(1)写出C1的普通方程和C2的直角坐标方程;
(2)若直线
过曲线C1的右顶点,求常数a的值.
在直角坐标系xoy中,曲线C1的参数方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e44a4a8fce07fd7cbfae312fa94985f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d903f5abce683cf8f5fc65b29ef910a9.png)
(1)写出C1的普通方程和C2的直角坐标方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3d8e1715492494a561318ca986fdea.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】直线l的极坐标方程为θ=α(ρ∈R,ρ≠0),其中α∈[0,π),曲线C1的参数方程为
(t为参数),圆C2的普通方程为x2+y2+2
x=0.
(1)求C1,C2的极坐标方程;
(2)若l与C1交于点A,l与C2交于点B,当|AB|=2时,求△ABC2的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cbf079f1536489dee42818f185b562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求C1,C2的极坐标方程;
(2)若l与C1交于点A,l与C2交于点B,当|AB|=2时,求△ABC2的面积.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】在平面直角坐标系
中,曲线
的参数方程为
(
为参数),以坐标原点
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:
,曲线
与曲线
相交于点
、
,与
轴相交于点
.
(1)写出曲线
的普通方程及曲线
的直角坐标方程;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4d9284a2f01412e49e01fefb86b57c.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ae9076b15e4af7ab6a75b8274d6819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)写出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7384b9afcef2d86a87eee0c66f383052.png)
您最近一年使用:0次