Find the local maximum and minimum values and saddle point(s) ofthe function. If you have three-dimensional graphing software,graph the function with a domain and viewpoint that reveal all theimportant aspects of the function. (Enter your answers as acomma-separated list. If an answer does not exist, enter DNE.) f(x,y) = x^3 + y^3 − 3x^2 − 3y^2 − 9x local maximum value(s) Correct:Your answer is correct. local minimum value(s) Incorrect: Youranswer is incorrect. saddle point(s)
