解题方法
1 . 已知曲线
的参数方程为
(
是参数),点
是曲线
上的动点.
(1)求曲线
的普通方程;
(2)已知点
是直线
上的动点,若
之间的距离
最小值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbd494adc8e1ca5cc8613069218f97c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d632e0a3c3addd6298976aba83c8c8be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-06-16更新
|
227次组卷
|
2卷引用:广西天等中学2019-2020学年高二上学期期中考试数学理科试题
2 . 在平面直角坐标系
中,直线l的参数方程为
(t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,曲线C的极坐标方程为
.
(Ⅰ)求直线l的极坐标方程及曲线C的参数方程;
(Ⅱ)若点P在直线l上,点Q在曲线C上,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33baed924ae693bc7d20fc98215f479f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6241a6eccfd1d89d5216873246cfec77.png)
(Ⅰ)求直线l的极坐标方程及曲线C的参数方程;
(Ⅱ)若点P在直线l上,点Q在曲线C上,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef367706991ec61604ab8481cd229576.png)
您最近一年使用:0次
名校
解题方法
3 . 在平面直角坐标系
中,曲线
的参数方程是
(
为参数),曲线
的直角坐标方程为
,将曲线
上的点向下平移1个单位,然后横坐标伸长为原来的2倍,纵坐标不变,得到曲线
.
(1)求曲线
和曲线
的直角坐标方程;
(2)若曲线
和曲线
相交于
两点,求三角形
的面积.
![](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/596970fd9d8024ef5bf780e988a58f81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e265ce107592c375b78007107a9c00a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e17dc84ba2e871aeb3a3fd2a2b5f1a8.png)
您最近一年使用:0次
2020-03-21更新
|
220次组卷
|
2卷引用:2019届广西南宁三中高考适应性月考卷(三)文科数学试题
解题方法
4 . 对于曲线
(
为参数,
)上任一点
,不等式
恒成立,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1349cbc9dee1b862b279b53d2daa5e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0ca9a39621967d7ba5629ea9b12d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f32b91196dc389afd5130a9583f6202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
5 . 在直角坐标系
中,曲线
的参数方程为
(
为参数),曲线
的直角坐标方程为
.
(1)求
与
的极坐标方程;
(2)在以
为极点,
轴的正半轴为极轴的极坐标系中,射线
与
的异于极点的交点为
,与
的异于极点的交点为
,求
.
![](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/3adb98792e0628e53f8aac587acc3630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63e43fb664c68138671267106c21df.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)在以
![](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/0bc1f08c7640e62e8717abf4d44a6c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
2020-06-16更新
|
195次组卷
|
2卷引用:广西天等中学2019-2020学年高二上学期期中考试数学理科试题
14-15高三上·重庆·阶段练习
名校
6 . 以平面直角坐标系的原点为极点,x轴的正半轴为极轴,建立极坐标系,两种坐标系中取相同的长度单位.已知直线l的参数方程是
(t为参数),圆C的极坐标方程是
,则直线l被圆C截得的弦长为____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546ffe703d5b6fdf12c6dc88ecc4f566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f07a3dc0e3632a7d2f32858f7003b4.png)
您最近一年使用:0次
2016-12-03更新
|
712次组卷
|
8卷引用:广西壮族自治区南宁市第三中学2018-2019学年高二下学期4月月考数学试题
7 . 直角坐标系
中,曲线
的参数方程为
(
为参数),曲线
.
(1)在以
为极点,
轴的正半轴为极轴的极坐标系中,求
、
的极坐标方程;
(2)射线
与
异于极点的交点为
,与
的交点为
,求
.
![](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/64f23bb05e586ec0a3d42bdf95399ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd32ccfcecee8bb1fb65ae47814b23.png)
(1)在以
![](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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3885a9129c24ed14cebd02f17cd1aa13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
2020-07-10更新
|
167次组卷
|
2卷引用:广西北流市实验中学2020届高三下学期开学考试数学(文)试题
8 . 已知
的极坐标方程为:
.
(1)求圆
在直角坐标系中的圆心坐标,并选择合适的参数,写出圆
的参数方程;
(2)点
在圆
上,试求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5eccf17f5d5fe936fb0d0e8b2694ce.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ed6e1ee7c08ed066589bfa550f41e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b280072b513099d6ca0f28119c650eb2.png)
您最近一年使用:0次
名校
9 . 在平面直角坐标系
中,曲线
:
(
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
的极坐标方程为
.
![](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/3affd14efbacf261aecf2082d22bc6ff.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddb01179761bb22b6cdb7c8a9723ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1f08c7640e62e8717abf4d44a6c83.png)
(Ⅰ)分别求曲线的极坐标方程和曲线
的直角坐标方程;
(Ⅱ)设直线交曲线
于
,
两点,交曲线
于
,
两点,求线段
的长.
您最近一年使用:0次
2017-04-22更新
|
800次组卷
|
7卷引用:广西来宾市2020届高三4月教学质量诊断性联合考试数学(文)试题
广西来宾市2020届高三4月教学质量诊断性联合考试数学(文)试题广西横州市横州中学2020-2021学年高二下学期期末考试数学试题2017届湖南省长沙市长郡中学、衡阳八中等十校高三第二次联考数学(理)试卷广东省汕头市金山中学2018届高三上学期期中考试(10月)数学(理)试题【全国百强校】重庆市西南大学附属中学校2019届高三第九次月考数学(理)试题(已下线)专题22 坐标系与参数方程-2020年高考数学(文)母题题源解密(全国Ⅰ专版)(已下线)专题22 坐标系与参数方程-2020年高考数学(理)母题题源解密(全国Ⅰ专版)
10 . 在直角坐标系
中,曲线
的参数方程为
(
为参数),经过变换
后曲线
变换为曲线
.
(1)在以
为极点,
轴的非负半轴为极轴(单位长度与直角坐标系相同)的极坐标系中,求
的极坐标方程;
(2)求证:直线
与曲线
的交点也在曲线
上.
![](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/bf83c66e1c7a55766c4bbf9f32e6047d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a5e2bf35e44ee84ad897d23b1061ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(1)在以
![](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/b4c8a9c4957431681ddfc77895a88508.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5244afeee604ee0de4a822cb71843f3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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