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[10pts] Consider the spiral 7(t) = (4 cost, 4 sint, 6t) where te [0, 2kx] and k = 1, 2, .. Find (a) The length

[10pts] Consider the spiral 7(t) = (4 cost, 4 sint, 6t) where te [0, 2kx] and k = 1, 2, .. Find (a) The length of two laps of the spiral y; (b) The integral of f(x, y, z) = ryz over one lap of the spiral y. [10pts]

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