1 . 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/349a465a45a731182861b2ade790b16a.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f449cadb49859b80c31ef1f68bfe81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7384b9afcef2d86a87eee0c66f383052.png)
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2020-09-16更新
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2卷引用:黑龙江省佳木斯市第二中学2019-2020学年高二下学期期末考试数学(文)试题
名校
2 .
经过伸缩变换
后所得图形的焦距
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d243009c6b609f2c6b7ddeb4dd540e9.png)
A.![]() | B.![]() | C.4 | D.6 |
您最近一年使用:0次
2019-07-15更新
|
915次组卷
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6卷引用:黑龙江省佳木斯市第一中学2017-2018学年高二上学期期中考试数学(文)试题
黑龙江省佳木斯市第一中学2017-2018学年高二上学期期中考试数学(文)试题(已下线)2019年5月27日 《每日一题》理数选修4-4-平面直角坐标系中的伸缩变换安徽省亳州市第二中学2018-2019学年高二下学期期末数学(理)试题广西崇左高级中学2020-2021学年高二下学期期中考试数学(文)试题广西浦北中学2021-2022学年高二下学期期中考试数学(文)试题(已下线)第五篇 向量与几何 专题3 仿射变换与反演变换 微点5 仿射变换综合训练
名校
3 . 将椭圆
按
,变换后得到圈
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b31ef7d04da62b28c25637de25f041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea86dee894762e350721b1151b306c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4587fedcdddace4005e9bfbea96f7ab.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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