解题方法
1 . 曲线
的参数方程为
(
为参数),则
的普通方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1c6a763a4b1cdac80b92beb652e4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
2 . 直线
(t为参数)的斜率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46bd43d3e164a32bc76a6f875956efed.png)
A.45° | B.135° | C.1 | D.![]() |
您最近一年使用:0次
3 . 曲线
的参数方程为
为参数
,则曲线
的形状是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9843e82b927d14ea27b8a59da1bced1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.线段 | B.直线 |
C.射线 | D.圆 |
您最近一年使用:0次