Ah! an optimization problem, I love those:
400=4y+3x--------Probably x,y>0 are the other conditions
we have by solving for y:
Thus, 2xy becomes:
2x(100-.75x) same as 200x-1.5x^2
Now maximize that function by taking the derivative:
Thus, the solution is
x=200/3 and y=50
Dec 20th 2005, 02:51 PM
Thank you for correcting me. I made my error when solving for y. Tried to simplify too much. Thanks a lot.
Dec 20th 2005, 02:57 PM
I've seen this thread on physicsforums.com. I think many of the users here are users there. :cool:
Dec 20th 2005, 07:35 PM
Yeah I posted this on that forum too because sometimes I don't get an answer if I only post it in one forum.