Question

Evaluate the surface integral F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = −xi − yj + z3k, S is the part of the cone z =sqrt(x2 +y2) between the planes z = 1 and z = 3 with downward orientation

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

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