The following figure shows a half-cylindrical closed surface, defined by the cylinder x² + y² = 4 and the planes y = 0, z = 1 and z=6. For the vector field V = xyi − yj+zk, find the flux out of the half- cylinder through the flat surface at z = 6. z=6 +y² = 4 y=0- (xz-plane) -z = 1

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