Proble m 3 Given an electrical field D = 4xâx– 2y²ây– 2z²âz 2=2 for the cylindrical region (bounded by x² + y² = 9, z = -2, and z =2), (a) calculated the surface integral |x² + y² = 9 z =-2 D•ds; (b) the volume integral S, V ·Ddv; (c) the total charge in this cylindrical region.. Answers: (a) .. (b) 144r
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