Originally Posted by Chester
Alright, we need to find the greatest amount of area possible with 40 yards of fencing.
First things first, write out what you know:
combine the equations:
change things around and call the area the function of l:
now we have a quadratic equation that opens down, so we find the vertex:
therefore the area is largest when l=10
I would like to know if this is a real life problem (are you actually putting up a garden or is this in a book)