Question: Find the critical points of the function. Then use the Second Derivative Test to determine whether they are local minima, local maxima, or saddle points

Find the critical points of the function. Then use the Second Derivative Test to determine whether they are local minima, local maxima, or saddle points (or state that the test fails).

f(x, y) = x + y - 4xy

f(x,y) = x + y - 4xy

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