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) = 2x3 − 6x + 6xy2
local maximum value(s)
local minimum value(s)
saddle point(s)
(x, y, f) =
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