4. Find the flux of the vector field F(x, y, z) = (y² + z²)i + (x² + z²)j + z(x² + y²) k - across the surface S, which is the surface of the solid bounded by the paraboloid z 9- x² - y² and the xy-plane. After you are finished integrating, try to use algebra instead 35 of arithmetic to arrive at the answer: 2 π

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