Find the local maximum and minimum values and saddle point(s) of the function. If you have...

  

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Find the local maximum and minimum values and saddle point(s) of the function. If you have three-dimensional graphing software, graph the function with a domain and viewpoint that reveal all the important aspects of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) F(x, y)=x²+²-3x²-3²-9x local maximum value(s) local minimum value(s) saddle point(s) Find the local maximum and minimum values and saddle point(s) of the function. If you have three-dimensional graphing software, graph the function with a domain and viewpoint that reveal all the important aspects of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) F(x, y)=x²+²-3x²-3²-9x local maximum value(s) local minimum value(s) saddle point(s)