名校
解题方法
1 . 将圆
上每一点的横坐标保持不变,纵坐标变为原来的
,得曲线
.
(1)求出
的参数方程;
(2)以坐标原点为极点,
轴正半轴为极轴建立极坐标系,设
是曲线
上的一个动点,求点
到直线
距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)以坐标原点为极点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda1a25c846e6088e4fedad6e832d31a.png)
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名校
2 . 在同一平面直角坐标系中,经过伸缩变换
后,曲线
变为曲线
,则曲线
的对称中心是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6350e9b99c58873737ec868db6b0f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c800b3593a416881bba4e5679b1bebad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-06-12更新
|
1337次组卷
|
5卷引用:四川省成都市树德中学2019-2020学年高二5月半期考试数学(理)试题
四川省成都市树德中学2019-2020学年高二5月半期考试数学(理)试题四川省成都市树德中学2019-2020学年高二5月半期考试数学(文)试题四川省成都市树德中学2019-2020学年高二(下)期中数学(理科)试题陕西省西安市铁一中学2020-2021学年高二下学期期中理科数学试题(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
3 . 已知曲线
的极坐标方程是
,以极点为原点,极轴为
轴非负半轴建立平面直角坐标系,直线
的参数方程为
(
为参数).
(1)写出曲线
的直角坐标方程和直线
的普通方程;
(2)在(1)中,设曲线
经过伸缩变换
得到曲线
,设曲线
上任意一点为
,当点
到直线
的距离取最大值时,求此时点
的直角坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f917a2022014d9c19c29eeac84c74e2f.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/e01a8c5004156881b1d36c8932830312.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)写出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)在(1)中,设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8df3b397c42787494832bf1ecc10ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2020-06-01更新
|
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2卷引用:2020届河北省保定市高三第二次模拟数学(理)试题
名校
4 . 在平面直角坐标系
中,曲线
的方程为
,直线
的参数方程为
(
为参数),若将曲线
上的点的横坐标不变,纵坐标变为原来的
倍,得曲线
.
(1)写出曲线
的参数方程;
(2)设点
,直线
与曲线
的两个交点分别为
、
,求
的值.
![](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/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f015d2ddf2146636a2f7565a380112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)写出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79188647c574441c2414c3781a0ef543.png)
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2020-04-16更新
|
521次组卷
|
2卷引用:四川省绵阳南山中学实验学校2019-2020学年高二下学期开学考试数学(理)试题
5 . 在直角坐标系
中,直线
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
的普通方程和
的直角坐标方程;
(2)把曲线
向下平移
个单位,然后各点横坐标变为原来的
倍得到曲线
(纵坐标不变),设点
是曲线
上的一个动点,求它到直线
的距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5ad3be70c066b4b70fdfaebf9679a.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdebedd02b4ea57f8562443742086d3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)把曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2020-03-29更新
|
887次组卷
|
4卷引用:2020届河北省沧州市高三一模数学(文)试题
2020届河北省沧州市高三一模数学(文)试题2020届河北省沧州市高三一模数学(理)试题广东省湛江市2019-2020学年高三下学期模拟数学(理)试题(已下线)专题13 坐标系与参数方程-2020年高三数学(文)3-4月模拟试题汇编
2020高三·全国·专题练习
6 . 若函数
的图象在伸缩变换
的作用下得到曲线的方程为
,求函数
的最小正周期.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7a222fc0c6eff68374338dd4dc53ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb5612e81b8d8bb0fd3c2da83876571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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7 . 在直角坐标系
中,曲线
的参数方程为
(
为参数),经过变换
后曲线
变换为曲线
.
(1)在以
为极点,
轴的非负半轴为极轴(单位长度与直角坐标系相同)的极坐标系中,求
的极坐标方程;
(2)求证:直线
与曲线
的交点也在曲线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83c66e1c7a55766c4bbf9f32e6047d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a5e2bf35e44ee84ad897d23b1061ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(1)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/b4c8a9c4957431681ddfc77895a88508.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5244afeee604ee0de4a822cb71843f3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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8 . 在平面直角坐标系中,曲线
(α为参数)经过伸缩变换
得到曲线C2.以坐标原点为极点,x轴正半轴为极轴建立极坐标系.
(1)求C2的普通方程;
(2)设曲线C3的极坐标方程为
,且曲线C3与曲线C2相交于M,N两点,点P(1,0),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5759ebe89171794a14e1e04fab734ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51039a037ef98aedc0b3e9a59371ef2f.png)
(1)求C2的普通方程;
(2)设曲线C3的极坐标方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82b1895d36c9104ec3630e59ddded3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e8b9f52929d1158454f2a0d17cab2d.png)
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2020-01-01更新
|
666次组卷
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2卷引用:河北省“五个一”名校联盟2019-2020学年高三上学期一轮复习收官考试数学(文)试题
9 . 将正弦曲线
先保持纵坐标
不变,将横坐标缩为原来的
;再将纵坐标
变为原来的3倍,就可以得到曲线
,上述伸缩变换的变换公式是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c191fdfd08fb94ba6ed45c71f0fbeb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 在同一直角坐标系中,曲线
经过伸缩变换
后所得到的曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ca9c2e84eabc66bb2b9e1aeee0ed3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949c22e13aad3bb0cf48b49e653c69aa.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2019-07-12更新
|
625次组卷
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2卷引用:福建省泉州市普通高中2018-2019学年高二下学期期末数学试题