[b]1. Find absolute max/min for the given function with the specified domain.
f(x,y)= x^2-xy+y^2 on the circular disk x^2+y^2 less/equal 4, use parametrization when checking boundary.
[b]2. f(x,y)= x^2-xy+y^2 x^2+y^2 less/equal 4
[b]3. The only thing I...