1.) Find the local maximum and minimum values and saddle
point(s) (x,y,f) 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) = xy − 5x − 5y − x2 − y2
2.)Find the local maximum and minimum values and saddle
point(s)(x,y,f) of the function. If...