I need solve this questions

Question 2 [30 pts] Let f(x, y) = 1 y3 2ch2 + 3x2 + 3y2 and h(x, y) = x2 + 2y2. a) [10pts] Find all the local maximum and minimum and saddle points, with their values, for the functions f and h. b) [10pts] Find all maximum and minimum points and their values for the function )2 subject to the constraint x2 + y2 = 5. c) [10pts] Evaluate the double integral D[2f(x, y) + yh(x, y) 60c2 + mam. where D is the region bounded by the lines y = 3x,y = 2,andx = 0