解题方法
1 . 直线
(
为参数)的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2965a7b61b3b271ad7629b1ea6bef4a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 若直线
为参数
与曲线
为参数,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
有且只有一个公共点,则
.
![](https://img.xkw.com/dksih/QBM/2015/7/9/1572174844035072/1572174849220608/STEM/85c9ff277fff4163b705408954578aa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/303ff1addefe76d623a4f65821fdcd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次