名校
1 . 已知抛物线
的焦点为F,准线为l,过E上一点A作l的垂线,垂足为M,线段AF的中点为N,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4fb72e39d79b7a0cd892fa5fa34bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7466c5aa19e723b00a5d7cdc5ac6d45a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
您最近一年使用:0次
2022-07-03更新
|
1013次组卷
|
4卷引用:甘肃省白银市第九中学2023-2024学年高二上学期第三次月考数学试题
甘肃省白银市第九中学2023-2024学年高二上学期第三次月考数学试题安徽省阜阳市界首第一中学等2校2022-2023学年高二上学期11月月考数学试题河南省新乡市封丘县第一中学2021-2022学年高二下学期期末数学理科试题(已下线)专题21 抛物线的焦点弦 微点2 抛物线的焦点弦常用结论及其应用综合训练
名校
2 . 已知抛物线
焦点为
,经过
的直线交抛物线于
,点
在抛物线准线上的射影分别为
,以下四个结论:①
,②
,③
,④
的中点到抛物线的准线的距离的最小值为2.其中正确结论的序号为_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e437baf8e2884813db9f0529eb245345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8454989732716850cb57ca15f8ef596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb2356a3833defed220ee1fa481aad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/917b1253f27d2cfc5cde5ec570bdce1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ff732ba6aa7c8c6f1f1d1739cf9148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
解题方法
3 . 已知抛物线
:
(
)的焦点为
,准线为
,过
的直线交抛物线
于
,
两点,交
于点
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b243f360cf61ac3005cc82e233bb61c.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/9578f403d26a9fbd00a879b3d3cc077f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b243f360cf61ac3005cc82e233bb61c.png)
您最近一年使用:0次
2020-02-27更新
|
505次组卷
|
7卷引用:甘肃省兰州市外国语高级中学2022届高三上学期9月建标考试理科数学试题
名校
4 . 直线
过抛物线
的焦点
,且与抛物线
交于
两点(点
在
轴的上方),若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59e07e7f6425b2f93fe1e4f1295ee41.png)
_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a499bb7ab9d720e663ec50f9355469d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59e07e7f6425b2f93fe1e4f1295ee41.png)
您最近一年使用:0次
2019-10-12更新
|
698次组卷
|
3卷引用:甘肃省武威市第六中学2019-2020学年高二上学期第一次学段考试数学(理)试题
甘肃省武威市第六中学2019-2020学年高二上学期第一次学段考试数学(理)试题(已下线)2019年11月12日 《每日一题》一轮复习文数-抛物线的简单几何性质(1)青海省湟川中学2019-2020学年高二上学期期末考试数学(理)试题
名校
解题方法
5 . 抛物线
的焦点为
,过点
的直线
交抛物线
于A,
两点,交抛物线
的准线
于
点,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b2a20cd6f609a4334713e086810b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a986b6799310790a4fcfab8da6a1ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
您最近一年使用:0次
2018-05-17更新
|
563次组卷
|
3卷引用:甘肃省天水一中2019届高三上学期一轮复习第五次质量检测(1月)数学(理)试题
解题方法
6 . 设抛物线
的焦点为
,过
的直线交该抛物线与
,则
的最小值为___________ .
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b5f2c868caddba2f4d94e5da0f242c.png)
您最近一年使用:0次