Question

f (x, y) =(x ^ 4)-8(x ^ 2) + 3(y ^ 2) - 6y Find the...

f (x, y) =(x ^ 4)-8(x ^ 2) + 3(y ^ 2) - 6y

Find the local maximum, local minimum and saddle points of the function.
Calculate the values ​​of the function at these points

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