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(a) Compute the first-order partial derivatives and all the second-order partial derivatives of the function defined by f(x,y) = 3 + x 3 - x

(a) Compute the first-order partial derivatives and all the second-order partial derivatives of the function defined by

f(x,y) = 3 + x³- x²- y²

(b) Find the stationary points.

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