1 . 在直角坐标系
中,曲线C的参数方程为
(其中
为参数),则曲线C的普通方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83c66e1c7a55766c4bbf9f32e6047d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 点
极坐标为
,则它的直角坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0f6b3e82cd69aa2198d15f183afb62.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-04-08更新
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3卷引用:四川省南充高级中学2022-2023学年高二下学期第一次月考数学(理科)试题
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3 . 在同一平面直角坐标系中,将曲线
按伸缩变换
后为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e1281856dd865eff89ba42eb92d2bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6278208176524354ca472369c8c57435.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-30更新
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5卷引用:陕西省黄陵中学2018-2019学年高二上学期期末考试数学(文)试题
4 . 在极坐标系中,与点
关于极轴所在的直线对称的点的极坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682c83ee9855a437a835c9b5326e973f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 将极坐标方程
转化为直角坐标方程是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ba661d645f716c8b9c73f80f3da026.png)
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解题方法
6 . 直线
(t为参数)的倾斜角是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85367d7bbdc8c0400312d961da8ac15.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知
为坐标原点,点
在圆
上运动,则线段
的中点
的轨迹方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d775c1919d90de48f1bf302aed321eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2023-01-13更新
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5卷引用:天津市滨海新区塘沽第一中学2022-2023学年高二上学期期末数学试题
8 . 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
的极坐标方程为
为
上一点,以
为边做等边
,且
三点按顺时针方向排列.
(1)当点
在
上运动时,求动点
运动轨迹
的直角坐标方程;
(2)当
时,若直线
与曲线
交于点
(不同于原点),与曲线
交于点
,求
的值.
![](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/b32c3a50f62893a63d74b6b180d5d1e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2665479c5fb12e1e728716a30a219c27.png)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9cf6a3813389ee07b5b5fac1f2aa50a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e07de972ec1e4516133178565e7d919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda50723035b35b2d5d5cb256ead520b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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2022-12-28更新
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2卷引用:河南省TOP二十名校2022-2023学年高三上学期调研模拟卷二理科数学试题
9 . 在直角坐标系
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极坐标系,曲线
的极坐标方程为
.
(1)求曲线
的普通方程和曲线
的直角坐标方程;
(2)求曲线
的任意一点到曲线
距离的最小值.
![](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/e10b2a16418f5fa81374e41c96c6c075.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.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/ad93f30d3d1df9f2c5712cbbad9bda7f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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2022-12-26更新
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5卷引用:陕西省宝鸡市2023届高三上学期一模理科数学试题
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10 . 若实数
满足等式
,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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