在直角坐标系
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,直线
的极坐标方程为
.
(1)写出曲线
的普通方程和直线
的直角坐标方程;
(2)若直线
与曲线
有两个不同交点,求
的取值范围.
![](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/b2f41b4128bbf50bdcd01d3f17db6d17.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/d107b8a9d65db9672415b8d65a2f73cc.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)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2019-04-28 23:00:11
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相似题推荐
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【推荐1】在平面直角坐标系中,以原点
为极点,
轴的正半轴为极轴建立极坐标系,已知直线
的极坐标方程为
,曲线
的极坐标方程为
.
(1)求直线
与曲线
的直角坐标方程;
(2)若射线
与直线
交于点
,与曲线
交于点
,求
.
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aadf5085d28cc1907231baa8ec53f787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66b3923c42a4d66d97cf6e480bec67a.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65125a43aa50b652de8f5614b81f176a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eab337bf4e133918aa1af547411a2f1.png)
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【推荐2】已知直线l的参数方程为
,点
在直线
上.
(1)求m的值;
(2)以坐标原点O为极点,x轴的非负半轴为极轴的极坐标系中,曲线
与直线l交于两点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b1d9045eb0af7177547abfa7a5ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ea63ab71e7abec7b21aa4518abb10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求m的值;
(2)以坐标原点O为极点,x轴的非负半轴为极轴的极坐标系中,曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e446670ca5033bb00214b36ea644efd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559d66fd8b309fd440ce9bda78a579c9.png)
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【推荐3】在平面直角坐标系
中,曲线
的参数方程为
(
为参数).以
为极点,
轴的正半轴为极轴建立坐标系,直线
的极坐标方程为
.
(1)求曲线
的普通方程和直线的直角坐标方程;
(2)设点
在曲线
上,点
在直线
上,求
的最小值.
![](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/af27b705ad624fb2858390178d0c1ff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757cc2f991fc97a773ceffbbd3a041fa.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
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【推荐1】在直角坐标系xOy中,曲线C1的参数方程为
(α为参数),将曲线C1经过伸缩变换
后得到曲线C2.在以原点为极点,x轴正半轴为极轴的极坐标系中,直线l的极坐标方程为ρcosθ-ρsinθ-10=0.
(1)说明曲线C2是哪一种曲线,并将曲线C2的方程化为极坐标方程;
(2)已知点M是曲线C2上的任意一点,求点M到直线l的距离的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b296bba61afa5a9a0e66a7ba883e6cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349a465a45a731182861b2ade790b16a.png)
(1)说明曲线C2是哪一种曲线,并将曲线C2的方程化为极坐标方程;
(2)已知点M是曲线C2上的任意一点,求点M到直线l的距离的最大值和最小值.
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【推荐2】在平面直角坐标系xOy中,曲线C的参数方程为
(α为参数),以坐标原点O为极点,x轴正半轴为极轴建立极坐标系,直线l的极坐标方程为
.
(1)求C与l的直角坐标方程;
(2)若P是C上的一个动点,求P到l的距离的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1331d55724aeecc7e0ecf3034898b647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a093d04c1bc2258840766d74de62b584.png)
(1)求C与l的直角坐标方程;
(2)若P是C上的一个动点,求P到l的距离的取值范围.
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解答题-问答题
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适中
(0.65)
【推荐3】在直角坐标系
中,曲线
的参数方程为
(
为参数),以原点
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
.
(1)求曲线
的极坐标方程及
的直角坐标方程;
(2)设
与曲线
、
分别交于异于原点的点
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6458b9e2c7c1522613a53bcab9312f7.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0077270bf4a36f0dc442e2ea569835c.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9110abf4003177e121920acfdc03dd.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4de13a47637548ce5594ed8d64dec0c.png)
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【推荐1】
在直角坐标系xOy中,直线l1的参数方程为
(t为参数),直线l2的参数方程为
.设l1与l2的交点为P,当k变化时,P的轨迹为曲线C.
(1)写出C的普通方程;
(2)以坐标原点为极点,x轴正半轴为极轴建立极坐标系,设
,M为l3与C的交点,求M的极径.
在直角坐标系xOy中,直线l1的参数方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5efa1023aba21e08092ba6cd3bcee61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91147212b2d4c0138c0b7d62884f8e67.png)
(1)写出C的普通方程;
(2)以坐标原点为极点,x轴正半轴为极轴建立极坐标系,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c4eec69422d2d7de88ad641af36e13.png)
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【推荐2】选修4-4:坐标系与参数方程
在极坐标系中,圆
的圆心坐标为
,半径为2.以极点为原点,极轴为
的正半轴,取相同的长度单位建立平面直角坐标系,直线
的参数方程为
(
为参数).
(1)求圆
的极坐标方程;
(2)设
与圆
的交点为
,
与
轴的交点为
,求
.
在极坐标系中,圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd35e8091fec1c715198e0556adac541.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/a0e0ec7d60d6f99a9b9b1c8ddefdca73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](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/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a3f21d4d834ba5b8b80dd56732c136.png)
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