Find and classify the critical points of fx, y) = 3xy - x³ - 2y²?.
For each type of behavior, enter a list of ordered pairs where the maximum/minimum/saddle point
occurs. If there are no points where the behavior occurs, enter "DNE"
fx, y) has a local maximum at __________
fx, y) has a local minimum at ________
fx, y) has a saddle point at ____________