2018高三·全国·专题练习
名校
1 . 选修4-4:坐标系与参数方程
在极坐标系和直角坐标系中,极点与直角坐标系的原点重合,极轴与
轴的正半轴重合,已知直线
:
(
为参数),圆
:
.
(1)将直线
的参数方程化为普通方程,圆
的极坐标方程化为直角坐标方程;
(2)已知
是直线
上一点,
是圆
上一点,求
的最小值.
在极坐标系和直角坐标系中,极点与直角坐标系的原点重合,极轴与
![](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/5b4ac9f7f98f235d68ac8ef4e015d9ae.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/287ec9b0117cf547f234e2bcacbbb19e.png)
(1)将直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
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2018-04-26更新
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6卷引用:【全国百强校】吉林省实验中学2017-2018学年高二下学期期末考试数学(文)试题
【全国百强校】吉林省实验中学2017-2018学年高二下学期期末考试数学(文)试题(已下线)2018年高考理科数学原创押题预测卷01(新课标Ⅱ卷)-理科数学(已下线)2018年6月2日 押高考数学第22题——《每日一题》2018年高三理科数学四轮复习(已下线)2018年6月2日 押高考数学第22题——《每日一题》2018年高三文科数学四轮复习(已下线)2019年6月1日 《每日一题》(理数)四轮复习—— 押高考数学第22题(已下线)2019年6月1日 《每日一题》(文数)四轮复习—— 押高考数学第22题
2 . 在直角坐标系
中,过点
的直线
的倾斜角为
,以坐标原点为极点,
轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
,直线
与曲线
的交点为
,
.
(1)求曲线
的直角坐标方程;
(2)求
及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879080beb1e55cae2639645cd64c4710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.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/00999b9a5320bad39b04ad762aa71a0a.png)
![](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)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559d66fd8b309fd440ce9bda78a579c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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11-12高三下·江苏·开学考试
名校
3 . 选修4-4:坐标系与参数方程
曲线
的参数方程为
为参数),
是曲线
上的动点, 且
是线段
的中点,
点的轨迹为曲线
,直线
的极坐标方程为
,直线
与曲线
交于
两点.
(1)求曲线
的普通方程;
(2)求线段
的长.
曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cae96322069655081ab04a7ef042c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23646371dbe78c3dbf6bbbf3e1524b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2017-02-16更新
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1647次组卷
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5卷引用:2015届吉林省实验中学高三上学期第五次模拟考试文科数学试卷
名校
4 . 在平面直角坐标系
中,求圆
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,直线
的极坐标方程为
.若直线
与圆
相切,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5827206bea8cba4133b60c1ff88f1940.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98169f2af4ebf0a0224886bc52992888.png)
![](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/11bc05f41215f9894e11d1df0465751a.png)
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2013·吉林长春·三模
5 . 在直角坐标系
中,曲线
的参数方程为
,
以原点
为极点,
轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
⑴ 求曲线
的普通方程和曲线
的直角坐标方程;
⑵ 当
时,曲线
和
相交于
、
两点,求以线段
为直径的圆的直角坐标方程.
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/7aab92f91a264b37bb908480a49d48eb.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/4483ae9f0389475db604268f5c73a036.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/eae077689fa4454d96c91ac65839dbb7.png)
以原点
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/8090dad012af495d980b8a0eea19ec8d.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/3e2e08a846ba483da71f9843644cfa88.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/32a29c1ff4084362b24503b57f345ec7.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/023266ddae424a008e2ee24661062546.png)
⑴ 求曲线
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/4483ae9f0389475db604268f5c73a036.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/32a29c1ff4084362b24503b57f345ec7.png)
⑵ 当
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/fe3e03e3969a44858759be1060e19a98.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/4483ae9f0389475db604268f5c73a036.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/32a29c1ff4084362b24503b57f345ec7.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/a269aeb096a94e05bad877b1e05df5ee.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/8c22005e10d74b5c94f1f4e16ff70608.png)
![](https://img.xkw.com/dksih/QBM/2013/9/4/1571340479283200/1571340484943872/STEM/5bf1eedeca3c4f8a858100f4965938fd.png)
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12-13高三·吉林白山·阶段练习
6 . 已知极坐标系的极点与直角坐标系的原点重合,极轴与直角坐标系的轴的正半轴重合.直线的参数方程是
(t为参数),曲线C的极坐标方程为
.
(Ⅰ)求曲线C的直角坐标方程;
(Ⅱ)设直线与曲线C相交于M,N两点,求M,N两点间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b85bf48540faccc855f3712a9411ccb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4be65bef7c1baedafa05003118c7ff89.png)
(Ⅰ)求曲线C的直角坐标方程;
(Ⅱ)设直线与曲线C相交于M,N两点,求M,N两点间的距离.
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名校
7 . 已知直线
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
.直线
过点
.F为曲线C左焦点.
(1)若直线
与曲线
交于
两点,求
的值;
(2)求曲线
的内接矩形的周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b83875093f338824cd6b7e6c0d20ec.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/0f7d7cef16186cba68ee038ff3927436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b0ccc973cfea178db6915d8d1e7490.png)
(1)若直线
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7dbc5f85292795579155dfd3baff0e.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2017-07-20更新
|
125次组卷
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3卷引用:【全国市级联考】吉林省延边州2018届高三高考仿真模拟数学(文科)试题
2012·吉林·一模
8 . .选修4—4:坐标系与参数方程
在极坐标系中,曲线
,过点A(5,α)(α为锐角且
)作平行于
的直线
,且
与曲线L分别交于B,C两点.(1)以极点为原点,极轴为x轴的正半轴,取与极坐标相同单位长度,建立平面直角坐标系,写出曲线L和直线
的普通方程;(2)求|BC|的长.
在极坐标系中,曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418f17c57cefb101a6d996b89eab4f29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecd28597c803ffb9dfdbcdd66223acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1919e849ec75c38caa3900183af8f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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