Find the mass of the wire that lies along the curve r and has density ?.r(t) = 10i + (7 - 4t)j + 3tk, 0 ? t ? 2? ; ? = 8(1 + sin 4t)

A. 16? units
B. 80? units
C. 20 + 80? units
D. 40 + 80? units


Answer: B

Mathematics

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