If a function of one variable is continuous on an interval

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Reference no: EM13590011

If a function of one variable is continuous on an interval and has only one critical number, then a local maximum has to be an absolute maximum. But this is not true for functions of two variables. Show that the function

f (x, y) = 3xey - x3 - e3y

has exactly one critical point, and that f has a local maximum there that is not an absolute maximum. Then use a computer to produce a graph with a carefully chosen domain and viewpoint to see how this is possible.

Reference no: EM13590011

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