Problem. 1: Use the level curves in the figure to predict the location of the critical points of f(x, y) = 4 + x + y' - 3xy and whether f has a saddle point or a local maximum or minimum at each critical point. (Order your answers by their ordered pairs, from smallest to largest x.) Then use the Second Derivatives Test to confirm your predictions. 3.5 4.5 3.5 -2 . P(x, y) with smaller x-value = 0 V 0 V P is a saddle point local minimum local maximum Correct . Q(x, y) with larger x-value = Q is a saddle point local minimum local maximum Correct