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## Homework Statement

F(x,y)= sin(x)sin(y)sin(x+y) over the square 0[tex]\underline{}<[/tex]x[tex]\underline{}<[/tex]pi and 0[tex]\underline{}<[/tex]y[tex]\underline{}<[/tex]pi

(The values for x and y should be from 0 to pi

**INCLUSIVE)**

## Homework Equations

## The Attempt at a Solution

I know I need to do the partial derivatives in terms of x and y and set them equal to 0 to find the critical points, but I am having some trouble with that.