名校
解题方法
1 . 已知抛物线
,焦点记为
,过点
作直线
交抛物线于
,
两点,则
的最小值为________ .
![](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/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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7203604385ef3065b52149d740959b27.png)
您最近一年使用:0次
2020-06-08更新
|
620次组卷
|
4卷引用:【新东方】杭州新东方高中数学试卷326
(已下线)【新东方】杭州新东方高中数学试卷326浙江省宁波市镇海中学2018届高三下学期5月模拟考试数学试题2020年浙江省名校高考仿真训练卷(三)浙江省宁波市镇海中学2020届高三下学期5月模拟数学试题
2 . 已知
是抛物线
上的点,则
的最大值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad78e5d3895e4f5e055d74f4294b27a.png)
您最近一年使用:0次
3 . 已知抛物线
的焦点为
,准线与
轴的交点为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98914a2f34d457acf18e36d3b6eac5f6.png)
为抛物线上的一点,且满足
,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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98914a2f34d457acf18e36d3b6eac5f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4d64e7df73d8d4f248d9406a174fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0573e4ac3ffa74064a17777ce7ffbcf1.png)
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4 . 过抛物线
的焦点
的直线交抛物线于
两点,若
(
为坐标原点),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234fdaf43deb222c265cdf40f5d8ca4a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.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/8b8115446a8cb1b1d28c49b7d2606974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234fdaf43deb222c265cdf40f5d8ca4a.png)
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13-14高二上·浙江·期末
解题方法
5 . 设抛物线
的焦点为
,点
在抛物线上,且
,弦
中点
在准线
上的射影为
,则
的最大值为__________ .
![](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/8bb2ea9c71f590461b068407f41cf563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94fb89e7241ba7aa43c2673ec85d24d1.png)
您最近一年使用:0次
2016-12-02更新
|
772次组卷
|
4卷引用:2012-2013学年浙江效实中学高二上期末考试理科数学试卷
(已下线)2012-2013学年浙江效实中学高二上期末考试理科数学试卷2016届浙江省杭州市高三第二次质检文科数学试卷2016届浙江省杭州市高三第二次质检理科数学试卷2016-2017学年河北石家庄二中高二理上期中数学试卷
2011·浙江金华·三模
名校
6 . 已知抛物线
的焦点为
,准线与
轴的交点为
为抛物线上的一点,且满足
,则
为 .
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e06117c33dbfbc009d6a2509659315f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0573e4ac3ffa74064a17777ce7ffbcf1.png)
您最近一年使用:0次