抛物线
焦点为
,直线
经过点
交
于
两点,交
轴于点
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f03bec8dd2b60881f4f324e737851d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14436636ec6a7aec09cb63cecf6e970d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997be35c94c84fbf81494d3fb368859c.png)
A.![]() |
B.点![]() ![]() |
C.![]() |
D.弦![]() ![]() ![]() |
21-22高二上·吉林长春·阶段练习 查看更多[2]
更新时间:2022-03-04 06:16:47
|
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适中
(0.65)
名校
解题方法
【推荐1】已知抛物线
的焦点为
,
为
上一动点,点
,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/732d1f2442a24cfa7276c6f6e0116afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6f776031e70ccc7535531099678390.png)
![](https://img.xkw.com/dksih/QBM/2023/1/12/3151334869819392/3151886827061248/STEM/f5bcefd40d5b4aa3842ee494f417ac3a.png?resizew=4)
A.当![]() ![]() |
B.当![]() ![]() ![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
解题方法
【推荐2】已知抛物线
的焦点为F,顶点为O,过点F的直线
与抛物线交于A,B两点,A在第一象限,若
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de39a21905bca30a9c2dc480f4716436.png)
A.直线![]() ![]() | B.线段AB的长度为![]() |
C.![]() | D.以AF为直径的圆与y轴相切 |
您最近一年使用:0次
多选题
|
适中
(0.65)
名校
解题方法
【推荐1】已知点
是抛物线
的焦点,过点
的直线交抛物线于
、
两点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
A.点![]() ![]() | B.若点![]() ![]() ![]() ![]() |
C.以![]() | D.![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
解题方法
【推荐2】已知抛物线
的焦点为F,过点F的直线
交抛物线于M,N两点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.抛物线的焦点坐标是![]() |
B.焦点到准线的距离是4 |
C.![]() |
D.若点P的坐标为![]() ![]() |
您最近一年使用:0次