Question 5. Find the global maximum and minimum values of it": y) = a\" on the region D={(2:,y)|232+4y2 32, 3:20} which looks like 1.5 0.5 (1) Find the critical points of f (2:, y), and determine the values of f (:17, y) at the critcial points. (2) After dividing the boundary into two parts, nd the maximum and minimum possible values of f (:12, y) on each part of the boundary of D, and compare them with the values of f(:13, y) at the critical points to obtain the global maximum/minimum values of f (:13, y)