参数方程为
(0≤t≤5)的曲线为________ .(填“线段”“射线”“圆弧”或“双曲线的一支”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bd3397c4407e310dafb5372b9b7d3b.png)
更新时间:2020-02-25 00:37:08
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【知识点】 参数方程化为普通方程解读
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解题方法
【推荐1】方程
(
为参数)所表示曲线的准线方程是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d8a6296576f21a905748018ba0c367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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【推荐2】在平面直角坐标系
中,直线
的参数方程为
(参数
),圆
的参数方程为
(参数
),则圆心到直线
的距离是
![](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/8131ae0e14e6d46986f2acc6bc0093e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9dbdb02bc52881a6944d669eaa5aaeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f687593cb4ecef31667bf2320fdfe000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐3】已知圆
的参数方程为
(
为参数)以原点为极点,
轴的正半轴为极轴建立极坐标系,直线
的极坐标方程为
,则直线
与圆
的交点的直角坐标为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcd836f0076cf49d2f627dc0e18c59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.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/36ef48f49822d0eabac3bcf416946338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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