Question: The function f is defined for positive x and all y by f(x, y) = y'Inx - xInx. Find the critical (or stationary ) points

The function f is defined for positive x and all y

The function f is defined for positive x and all y by f(x, y) = y'Inx - xInx. Find the critical (or stationary ) points of f and determine, for each, whether it is a local maximum, a local minimum, or a saddle point

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