Question: please do it in 20 minutes Find all the partial derivatives of f (x, y) - ex cos(2y) up to the second order at the

please do it in 20 minutes Find all the partial derivatives

please do it in 20 minutes

Find all the partial derivatives of f (x, y) - ex cos(2y) up to the second order at the point P(0, 5). Then use these in the Taylor's formula to obtain a quadratic approximation of f at P in its simplified form

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