Find the center of mass of the wire that lies along the curve r and has density ?.r(t) = (-3 - 3t)i + j + 5tk, 0 ? t ? 1; ?(x, y, z) = x + z2
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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A. -815 - 8x B. 7x C. -120x D. 15x - 8
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Differentiate the following implicitly to find dy/dx . Then find the slope of the curve at the given point.
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A. (-?, 2] ? [8, ?)
B. (2, 8)
C. [-8, -2]
D. (-2, 8)
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