解题方法
1 . 圆
的参数方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a40f60a5bf3faee549f270a3cd97dd.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2022-12-31更新
|
288次组卷
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2卷引用:西藏林芝市第二高级中学2022-2023学年高二下学期期末考试数学(文)试题
2 . 在平面直角坐标系
中,将曲线
(
为参数) 上任意一点
经过伸缩变换
后得到曲线
.以坐标原点
为极点,
轴的非负半轴为极轴,建立极坐标系,直线
的极坐标方程为
.
(1)求直线
的普通方程和曲线
的直角坐标方程;
(2)设直线
与曲线
交于
两点,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1954a0f8b8a819cd372d3781650a44b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6f8a4abae83872f6ac8eb01e6b5d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/03fc38239417c07e211067e6b8cb439b.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设直线
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dfca892b9d36a4796ad415237eae802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8077e1fc6b3b0d749e5533fbe2f468e.png)
您最近一年使用:0次
2020-06-17更新
|
692次组卷
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2卷引用:西藏拉萨市那曲第二高级中学2019-2020学年高二下学期期末考试数学(文)试题