Find the critical point(s) and classify them as local maxima, local Edit minima, or saddle points. f (x, y) = 323 + 3y3 - 9y2 - 9x + 2 Number of critical points: four Enter the critical point(s) as point(s) (a, b). f has a saddle point at (-1, 0) X f has |a saddle point at (-1, 2) f has a local minimum at (1, 2) f has a local maximum at (1, 0) X