Help Min & max applied problems

[ayrestaurant]

Homework Statement

An open box with a square base is to be constructed from 3 square feet of material. What dimensions will produce a box with maximun volume?

Homework Equations

v = l * w * h

The Attempt at a Solution

any other formulas involved.. ?

help... and thanx!

 

[armolinasf]

Since you want to maximize volume you're going to want to take the derivative of V. In order to do that you first need to get it in terms of a single variable. To do this you need a second equation relating either length width or height to some number. In your case you would want to write the equation giving the surface area of the box and go from there. Hope this helps