Use the level curves in the figure to predict the location of the critical points of f and whether has a saddle point or a local maximum or minimum at each critical point. Then use the Second Derivatives Test to confirm your predictions. (Order your answers by their ordered pairs, from smallest to largest x.) f(x, y) = 4+x³+y³ - 3xy (x, y) = ( (x, y) = ( Select Classification : Select Classification

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