Find the mass of the wire that lies along the curve r and has density ?.r(t) = 7i + (8 - 3t)j + 4tk, 0 ? t ? 2? ; ? = 8(1 + sin 4t)
A. 80? units
B. 40 + 80? units
C. 20 + 80? units
D. 16? units
Answer: A
Mathematics
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