The position vector of a particle is r(t). Find the requested vector.The velocity at t = 0 for r(t) = cos(4t)i + 7ln(t - 5)j - 
k
A. v(0) = -
j
B. v(0) = 
j
C. v(0) = -4i - 
j
D. v(0) = 4i - 
j
Answer: A
Mathematics
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