名校
1 . 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)
您最近一年使用:0次
2023-01-13更新
|
920次组卷
|
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
2 . 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
|
422次组卷
|
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
3 . 已知曲线
的参数方程为:
(
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
的极坐标方程为:
,直线l的极坐标方程为
.
(1)求曲线
的普通方程;
(2)若曲线
和曲线
与直线l分别交于非坐标原点的A,B两点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0358f447dde1e70052e2e23a298e02da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f9e700f9e9ac06f36118858f1339e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a6a1d319648bb969845a9159cdba7.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若曲线
![](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/aaff41080fdea43eea7efedf9ebc1498.png)
您最近一年使用:0次
2022-09-30更新
|
1452次组卷
|
5卷引用:内蒙古科尔沁左翼中旗保康第一中学2022-2023年高三上学期数学(理科)模拟预测试题
4 . 把点
的极坐标
化成直角坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a09fc50ef1e906a3fe66a5c111c7fe.png)
您最近一年使用:0次
解题方法
5 . 实数x,y满足
,则
的最大值和最小值之和是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072d7a498277a8ec2f3190217a869433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e63cf5c0bf7bf30b777032fe96a311.png)
A.![]() | B.![]() | C.0 | D.![]() |
您最近一年使用:0次
6 . 直线
的直角坐标方程为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae9051f52c0f0c79806d610dbd40c03.png)
您最近一年使用:0次
7 . 在极坐标系中,已知两点
、
,则线段
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e883c16b16b80e126c4c5859ee81bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f469f98ffa1310432443a2f59d6f0f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-07-17更新
|
629次组卷
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2卷引用:河南省南阳市2021-2022学年高二下学期期末数学文科试题
8 . 圆心
,半径为3的圆的参数方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f0ee968f9a247871a54e505fbd111b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
9 . 在极坐标系中的点(3,π)化为直角坐标是( )
A.(3,0) | B.(-3,0) | C.(0,3) | D.(0,-3) |
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10 . 若将曲线
上的点的横坐标变为原来的2倍,纵坐标变为原来的
,得到的曲线为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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