解题方法
1 . 在平面直角坐标系
中,已知直线l的参数方程为
(t为参数),曲线C的参数方程为
(s为参数).设P为曲线C上的动点,则点P到直线l的距离的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f014c0a4ab67c127debbd9e4ffb63e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a904ef19102c1fad743d6ad99097714.png)
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解题方法
2 . A、B是直线
上的两个动点,且
,点
(其中
),则
的最小值等于___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529b4836786aca156de325464ea2ecd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9e7df48a14730dbec3e4de1d3422f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417a7baca0753ba9ad45fe148d5d291c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe89d0ce747d21036a5ba5415a88d78.png)
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3 . 在平面直角坐标系
中,直线
的参数方程为
(
为参数),圆
的参数方程为
(
为参数),则直线
与圆
的位置关系是________ .
![](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/4fd3f0c9915f3ec2d06700599f1d6160.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/b43cfc19228688316583d66ed1b7a9e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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4 . 设P是曲线
为参数)上的一动点,
为坐标原点,M为线段
的中点,则点M的轨迹的普通方程为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91239dec045ce8b6c37d57f67d45448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
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2019-08-17更新
|
505次组卷
|
4卷引用:2019年上海市南洋模范中学三模数学试题
5 . 参数方程
,
表示的曲线的普通方程是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d658478b191e44e858e1d489ffb629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f687593cb4ecef31667bf2320fdfe000.png)
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6 . 直线
,(t为参数)与曲线
,(
为参数)的公共点的个数是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d878d665b193f3b85457140f752161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92cb343df36374244e49bc37f2a066a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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7 . 直线
的参数方程为
(
为参数),则
的一个法向量为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410d629a44a33aa55701b4cfc6af0acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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8 . 在平面直角坐标系
中,直线
的参数方程为
(
为参数),椭圆
的参数方程为
(
为参数),则直线
与椭圆
的公共点坐标为__________ .
![](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/6599b5edd34d52579cdc99a4b9541466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3dea885e97fe87e45d44806c105c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2018-04-19更新
|
379次组卷
|
3卷引用:上海市普陀区2018届高三下学期质量调研(二模)数学试题
上海市普陀区2018届高三下学期质量调研(二模)数学试题(已下线)课时36 椭圆-2022年高考数学一轮复习小题多维练(上海专用)江西省景德镇市浮梁县第一中学2020-2021学年高二5月月考数学(文)试题
2010·上海闵行·二模
9 . 已知直线
的参数方程是
(
是参数),以原点
为极点,
轴正半轴为极轴建立极坐标系,圆
的极坐标方程为
,则圆
的圆心到直线
的距离是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c987f11e47264309508183176af2393.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/327121f1d3f53b5ef0a5833bd06b4d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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