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List these six partial derivatives for z = 3 x2 y + cos (x y) –...

List these six partial derivatives for z = 3 x2 y + cos (x y) – ex+y

dz/dx dz/dy d2z/dx2 d2z/ dy2 d2z/dxdy d2z/dydx


                 

  1. Evaluate the partial derivative            dz        at the point (2, 3, 30) for the function z = 3 x4 – x y2

dx

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