1 . 如图,已知三点
,
,
在抛物线
上,点
,
关于
轴对称(点
在第一象限), 直线
过抛物线的焦点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/659c71c8-b5e2-41cd-b4fa-dff648af2c8e.png?resizew=218)
(Ⅰ)若
的重心为
,求直线
的方程;
(Ⅱ)设
,
的面积分别为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/22ac6188f40414f76bc754dee4a75809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/659c71c8-b5e2-41cd-b4fa-dff648af2c8e.png?resizew=218)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc3919b5000f9af77ddb77a62bee9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4648e82b3498cf4e572476d3da35d4d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6674bbfe6a37371b3a71867f97407842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e0220b69129c751ecf262ea4da52cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367d24b829ef64d7d15b57e676d6ed88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be89b91f05f281190209b1e876299d57.png)
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2019-07-08更新
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2卷引用:云南省大理州祥云县2019-2020学年高二下学期期末统测数学(文)试题