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 NONE in any unused answer blanks.) f(x, y) = 5 - 2x + 4y - x2 - 42 maximum FC (smaller x value) (larger x value) minimum FC (smaller x value) (larger x value) saddle points ) (smallest x value) )(largest x value)