a) Let Fand let → (x, y, z) = (x, y, z) S be the surface given by z = 16 – x with and upward orientation. 2 – y 2 z 2 7 Compute S directly. Hint: the answer is S SF→· dS → 369n 2. b) Do the adaptation (the adding and subtracting) you mentioned above and find integral with divergence theorem. Note: you should get the same value as in part (a).

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