Use a parameterization to find the flux modifyingbelow integral from nothing to nothing integral from nothing to nothing with upper s bold upper f times n d sigma of bold upper f equals z squared bold i plus xj minus 4 z bold k in the outward direction (normal away from the x-axis) across the surface cut from the parabolic cylinder zequals1minusysquared by the planes xequals0, xequals1, and zequals0.