Assignment:
Let f(x,y) = xy2+ 2x2y - 6xy
(a) Locate the critical points of f(x,y) and determine if they are local maxima, minima, or neither.
(b) Find the first and second order approximations of f(x,y) at the point (1,-1).
Provide complete and step by step solution for the question and show calculations and use formulas.