已知抛物线
的焦点为
,准线为
,
、
是
上异于点
的两点(
为坐标原点)则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531fc91e66179b770d8a89e2e7ac8cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.若![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
更新时间:2023-04-25 19:48:40
|
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【推荐1】已知抛物线
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,
,过点
的直线
交抛物线
与
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
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A.![]() |
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C.![]() |
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【推荐2】已知
为坐标原点,抛物线
的焦点为
,准线与
轴交于点
,过点
的直线
与
交于
,
两点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
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【推荐1】已知
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解题方法
【推荐2】已知抛物线C:
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A.![]() |
B.若![]() ![]() ![]() ![]() ![]() ![]() |
C.对任意点M,均有![]() |
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【推荐1】过抛物线
:
焦点
的直线
交
于
,
两点,
为坐标原点,则( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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A.不存在直线![]() ![]() |
B.若![]() ![]() ![]() |
C.过![]() ![]() ![]() ![]() ![]() |
D.过![]() ![]() ![]() |
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名校
【推荐2】如图,抛物线
的焦点为
,过点
的直线与抛物线
交于
,
两点,过点
,
分别作准线
的垂线,垂足分别为
,
,准线
与
轴的交点为
,则( )
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【推荐1】在平面直角坐标系
中,已知抛物线
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上两点下列说法正确的是( )
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