Question

A farmer wishes to fence o two identical adjoining rectangular elds, each with 3 square miles of area. Find x and y such that the minimum amount of fence is required.

Answer 1

So the formula for area is the constraint. Can I write A=2xy=3 to allow for the two areas?

Answer 2

so x times y = 3
should that make 2xy=6?

Answer 3

Oops, that's what I meant :)

Answer 4

So this is fine to use for the constraint?

Answer 5

Do I optimize P=2x+3y ?

Answer 6

you now have 2 formulas

2xy=6
4x+3y=P

and P needs to be as small as possible

Answer 7

Ok, thanks!