解题方法
1 . 抛物线
的焦点为
,准线为
,点
为抛物线上一点,满足
(
为坐标原点),
,垂足为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f58cb53e4f4d3cb053785d53fbb2a3.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.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/3c26c84ee017deda59151ac60f21ac23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c97d2110db5fc9cd9971a63cadcf87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ddf9f494bfe841e59ee09487a0cc59a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f58cb53e4f4d3cb053785d53fbb2a3.png)
您最近一年使用:0次
解题方法
2 . 已知抛物线
的焦点为
,点
在
上,点
,若
的最小值为5,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae55952e90bddabd1205eeb66437c7a.png)
__________ .
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f83a841ffc534468a09b824bb5b694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508734095955bb96d52f37be4e681700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae55952e90bddabd1205eeb66437c7a.png)
您最近一年使用:0次