1 . 已知曲线
(
为参数),设曲线
经过伸缩变换
得到曲线
,以直角坐标中的原点
为极点,
轴的正半轴为极轴建立极坐标系.
(1)求曲线
的极坐标方程;
(2)若
是曲线
上的两个动点,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fa866b53e4ac53a7d068968a4547420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d43165efa3271ee58a4e0df94bb0c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b227b38b45b5fce63a6bdad8adf113.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/e2b227b38b45b5fce63a6bdad8adf113.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b227b38b45b5fce63a6bdad8adf113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e8a877310280635813625924a02d5a.png)
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2020-05-22更新
|
387次组卷
|
3卷引用:广西钦州市第一中学2019-2020学年高二下学期期中考试数学(文)试题
名校
2 . 在平面直角坐标系xOy中,曲线C1的参数方程为
(α为参数,α∈R),在以坐标原点为极点,x轴非负半轴为极轴的极坐标系中,曲线
.
(Ⅰ)求曲线C1的普通方程与曲线C2的直角坐标方程;
(Ⅱ)若曲线C1和曲线C2相交于A,B两点,求|AB|的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bf90f6f8cfcc98593b0d3769232a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008dea0756b5eb5cfb35812094cb0dd6.png)
(Ⅰ)求曲线C1的普通方程与曲线C2的直角坐标方程;
(Ⅱ)若曲线C1和曲线C2相交于A,B两点,求|AB|的值.
您最近一年使用:0次
2019-04-26更新
|
353次组卷
|
3卷引用:广西钦州市第一中学2019-2020学年高二下学期期中考试数学(文)试题
解题方法
3 . 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)
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2020-06-16更新
|
227次组卷
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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
4 . 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
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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
名校
解题方法
5 . 在直角坐标系
中,以坐标原点为极点,
轴正半轴为极轴,建立极坐标系,已知直线
的参数方程为
(
为参数),圆
的参数方程为
(
为参数).
(1)求圆
的直角坐标方程;
(2)若直线
与圆
相交于
,
两点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.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/05f708ee10e71ca51ca557cbefa19648.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/d86d51146ef8676cd04cc0610a1a6f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
您最近一年使用:0次
2020-08-04更新
|
152次组卷
|
2卷引用:广西浦北中学2021-2022学年高二下学期期中考试数学(文)试题
6 . 选修4-4:坐标系与参数方程
在平面直角坐标系
中,以
为极点,
轴正半轴为极轴建立极坐标系,直线
的参数方程为
(t为参数),曲线
的极坐标方程为
.
(1)写出直线
的直角坐标方程和曲线
的普通方程;
(2)求直线
与曲线
的交点的直角坐标.
在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/d000ac80976e9c71c2fb2cbf664187c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0cb878349009a779d94b1bc40319bb.png)
(1)写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2017-05-15更新
|
418次组卷
|
2卷引用:广西陆川中学2017届高三下学期期中考试数学(理)试题
7 . 在直角坐标系
中,直线
的参数方程为
,以坐标原点为极点,x轴的非负半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(Ⅰ)把
的极坐标方程化为普通方程;
(Ⅱ)求
与
交点的极坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6e3068d45760efcd652868d4fdc325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b598dfde551f91c86d363dcd2b578d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb767e0075ff6200a58af8924c7b8e5.png)
(Ⅰ)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6e3068d45760efcd652868d4fdc325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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