Question: Write a in the form a = a T + a N at the given value of t without finding T and N. r(t) =

Write a in the form a = a T + a N at the given value of t without finding T and N. r(t) = (2t + 4)i + (t)j + (t-)k, t= 1 T + N (Type exact answers, using radicals as needed.)

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