# MATH

posted by
**GRAVITY**
.

Determine all the absolute extreme values for the function f(x, y) = sin x sin y sin(x + y) on the square

0 <x <PI ,0 < y < PI.

posted by
**GRAVITY**
.

Determine all the absolute extreme values for the function f(x, y) = sin x sin y sin(x + y) on the square

0 <x <PI ,0 < y < PI.