4. Calculate the value of the following integrals (a) (16) f f(x + y2)dS, S is...

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4. Calculate the value of the following integrals (a) (16) f f(x² + y2)dS, S is the surface with vector equation r(u, v) = (2uv, u²-v², u²+v²), u² + v² ≤1. (b) (16) ff 2√² + y² +22dV, where H is the solid hemisphere that lies above the ry-plane and has center the origin and radius 1. 4. Calculate the value of the following integrals (a) (16) f f(x² + y2)dS, S is the surface with vector equation r(u, v) = (2uv, u²-v², u²+v²), u² + v² ≤1. (b) (16) ff 2√² + y² +22dV, where H is the solid hemisphere that lies above the ry-plane and has center the origin and radius 1.