Calc 3 solve

Let f (x, y) = 2ac3 + 3x2y + 3y2. 1. How many critical points does f have? (enter an integer, or enter infty if f has infinitely many critical points) 2. Use the second derivative test to determine the following. . f has a saddle point at ( (enter integers for both x and y coordinates, or enter none for both x and y coordinates if no such point exists) . f has a local minimum at the point ( enter integers for both x and y coordinates, or enter none for both x and coordinates if no such point exists)