已知直线l:y=k(x-2)与抛物线C:y2=8x交于A,B两点,F为抛物线C的焦点,若|AF|=3|BF|,则直线l的倾斜角为_________ .
更新时间:2017-04-13 19:31:34
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【推荐1】已知抛物线
与圆
,过抛物线的焦点
作斜率为
的直线
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两点,与圆交于
两点(
在
轴的同一侧),若
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的值是___________ .
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【推荐2】已知曲线
:
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到焦点
和到点
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【推荐1】已知函数
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的图象交于
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两点(点
在点
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之间),给出下列四个结论:
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为
轴上一点,则存在符合条件的点
和实数
,使得
为等边三角形;
②记
,则
(a)
;
③记
,则
(a)的值域为
;
④记
,则对任意的非零实数
,都有
成立
,
表示
,
中最大的数,
,
表示
,
中最小的数).
其中正确结论的序号是__ .
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①若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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②记
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③记
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④记
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其中正确结论的序号是
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【推荐2】已知经过抛物线C:y2=2px(p>0)的焦点F且倾斜角为
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