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Problem 3.Let Σ be the top hemisphere (z≥0) of x^2+y^2+z^2= 9 with upward normal and let...

Problem 3.Let Σ be the top hemisphere (z≥0) of x^2+y^2+z^2= 9 with upward normal and let F(x,y,z) =xzi+yj−k. Evaluate ∫∫ΣF·dS directly.

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