Question: Let r(t) = (t 2 , 1 t, 4t). Calculate the derivative of r(t) a(t) at t = 2, assuming that a(2) =

Let r(t) = (t2, 1 − t, 4t). Calculate the derivative of r(t) · a(t) at t = 2, assuming that a(2) = (1, 3, 3) and a'(2) = (−1, 4, 1).

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