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(c) Let G be the solid in the first octant bounded by x2 + y? + 2? = 9. Use spherical coordinates to evaluate cz

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(c) Let G be the solid in the first octant bounded by x2 + y? + 2? = 9. Use spherical coordinates to evaluate cz dV. (7 marks) G QUESTION 3 (20 MARKS) (a) Given the vector-valued function r(t) = 3i + 2tj + (3 - 2t?) k. (i) Sketch the gra of r(t) on a 3D diagram for 0 S t - 2. (2 marks) (ii) Find the unit tangent vector at t = 1

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