名校
解题方法
1 . 抛物线
的焦点为
,
为抛物线
上一动点,定点
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2f6860a258341d24a87038c61527fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8c934a5b1e5481440d8de919a3771c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508734095955bb96d52f37be4e681700.png)
您最近一年使用:0次
2022-12-29更新
|
601次组卷
|
5卷引用:湖北省随州市曾都区第一中学2022-2023学年高二上学期期末模拟数学试题
2 . 已知抛物线
的焦点为
为抛物线上一动点,直线
交抛物线于
两点,点
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/088fcdd595455906a1a7080d630611f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d945b17623cd01fa90180c4d4fca91f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8c4afeb6cf6e4eac6c1044ecb12a2f.png)
A.存在直线![]() ![]() ![]() |
B.![]() |
C.当直线![]() ![]() ![]() ![]() |
D.若分别以![]() ![]() |
您最近一年使用:0次
2021-08-04更新
|
556次组卷
|
4卷引用:湖北省随州市曾都区第一中学2022-2023学年高二下学期期末模拟数学试题
3 . 已知抛物线
的焦点为
,准线为
,
是
上一点,
是直线
与抛物线
的一个交点,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64447af8454c613a58b11d9274d3da2c.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b198e9bfe80e28c97d01fab8fd61a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0520ecc4bfce2952eacf68376c1ebc1d.png)
A.![]() | B.3 | C.![]() | D.2 |
您最近一年使用:0次
2020-04-19更新
|
616次组卷
|
5卷引用:湖北省随州市2020-2021学年高二上学期期末数学试题