已知点
在抛物线
上,C在点B处的切线与C的准线交于点A,F为C的焦点,则直线
的斜率为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023aa305cb56748bf20e3051077a3d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df40ba57bb5819b4aaa38d514500052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
更新时间:2021-05-08 08:47:03
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【推荐1】垂直于直线
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