- #1
camino
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Homework Statement
Find the absolute maximum and absolute minimum of f(x,y)=12xy-x^2 y-2xy^2 on the region bounded by x=1, y=1, and y=4/x
Homework Equations
The Attempt at a Solution
For x=1
f(1,y)= 12y-y-2y^2
= 11y-2y^2
f'(1,y)= -4y+11=0
= -4y=-11
= y=11/4
For y=1
f(x,1)= 12x-x^2-2x
= 10x-x^2
f'(x,1)= -2x+10=0
= -2x=-10
= x=5
For y=4/x
I have no idea.
Am I even doing these right? I am confused. Any work/help would be greatly appreciated!