02 02 = y cos ry + ye"; dy = rcosry te . 2) (Maxima and Minima) (16 pts) Find all critical points of the function f(x, y) = aly - 2ry' + 3ry + 4 and use the Second Derivative Test to classify each critical point as a relative maximum, a relative minimum, or a saddle point. 3) (Lagrange Multipliers) (12 pts) Use the method of Lagrange multipliers to find the critical