1 . 已知抛物线
的焦点为F,过F的直线与C交于点
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
A.若![]() |
B.若![]() ![]() |
C.![]() |
D.若直线AB的斜率为1,则![]() |
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2023-03-16更新
|
375次组卷
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4卷引用:江西省赣州市兴国县兴国中学2022-2023学年高二下学期3月月考数学试题
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解题方法
2 . 已知
为坐标原点,
,
,
是抛物线
上两点,
为其焦点,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cda12642d59a5817e8990c43de20535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
A.![]() ![]() |
B.若![]() ![]() ![]() |
C.若直线![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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