名校
解题方法
1 . 某工厂新建员工宿舍,若建造宿舍的所有费用
(万元)和宿舍与工厂的距离
km的关系为
,若距离为1km时,测算宿舍建造费用为40万元.为了交通方便,工厂和宿舍之间还要修一条道路,已知铺设路面成本为6万元/km,设
为建造宿舍与修路费用之和,
(1)求
的值.
(2)求
关于
的表达式.
(3)宿舍应建在离工厂多远处,可使总费用
最小,并求最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde8c4708a78514fcb11b4cc7799ebb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)宿舍应建在离工厂多远处,可使总费用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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2022-11-11更新
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268次组卷
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6卷引用:江苏省苏州市吴县中学2023-2024学年高一上学期10月月考数学试题