1 . 已知抛物线
的焦点为
是抛物线上的两点,则下列说法中正确的是:( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a78559c9184218b6ca26670a268a23.png)
A.若线段![]() ![]() ![]() ![]() |
B.若线段![]() ![]() ![]() ![]() ![]() |
C.已知![]() ![]() ![]() ![]() ![]() ![]() |
D.抛物线上一动点![]() ![]() ![]() ![]() |
您最近一年使用:0次
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解题方法
2 . 平面直角坐标系中xOy中,已知抛物线
,焦点为F,准线为l,顶点为A,则下列说法正确的有:( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50996be3c0d950d6ef58110948b7fbf.png)
A.抛物线上两点P、G与顶点A为正三角形三顶点,PG与![]() |
B.过![]() ![]() ![]() ![]() ![]() ![]() |
C.过![]() ![]() ![]() |
D.任意作一条直线![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
3 . 已知过抛物线
焦点
的直线
交
于
两点,交
的准线于点
,其中
点在线段
上,
为坐标原点,设直线
的斜率为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.当![]() ![]() | B.当![]() ![]() |
C.存在![]() ![]() | D.存在![]() ![]() |
您最近一年使用:0次
2023-01-14更新
|
810次组卷
|
4卷引用:江苏省南通市启东市吕四中学2022-2023学年高三下学期开学检测数学试题