The position vector of a particle is r(t). Find the requested vector.The velocity at t = 2 for r(t) = (4t2 + 2t + 9)i - 3t3j + (5 - t2)k
A. v(2) = 18i + 36j + 4k
B. v(2) = 10i - 12j - 2k
C. v(2) = 18i - 36j - 4k
D. v(2) = 14i - 36j - 4k
Answer: C
Mathematics
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