解题方法
1 . 已知过抛物线
的焦点
的直线交抛物线于
两点,线段
的延长线交抛物线的准线
于点
.若
.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/a3588ba11500f9272761470f6ac32587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知点
为抛物线
:
的焦点. 若过点
的直线
交抛物线
于
,
两点, 交该抛物线的准线于点
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/bc88389e-cb50-449a-859d-4dcb1c0c7950.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5e71327008f734a80f3a491072d1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d02fa8edb0051f50e1eb14a11e6832d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5e71327008f734a80f3a491072d1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91283c5182d4537a095e2e30f5f4bcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d010d5cd3aef83280dd5b22412ab3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db10de504809cd0009a9ccc391fc234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/bc88389e-cb50-449a-859d-4dcb1c0c7950.png?resizew=163)
A.![]() | B.0 | C.1 | D.2 |
您最近一年使用:0次
2019-07-17更新
|
565次组卷
|
4卷引用:内蒙古赤峰二中2022-2023学年高二下学期第一次月考数学(文)试题
名校
3 . 已知抛物线
,过原点作两条互相垂直的直线分别交
于
两点(
均不与坐标原点重合),则抛物线的焦点
到直线
距离的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-03-29更新
|
630次组卷
|
4卷引用:内蒙古霍林郭勒市第一中学2021-2022学年高二下学期期中考试数学试题