# Determine the unit tangeDetermine the unit tangent vector to the following curve at t = 1 r = 2t2ˆi + (t3 − 4t) ˆj+ (5t − t2 )kˆnt vector to the following curve at t = 1 r = 2t2ˆi + (t3 − 4t) ˆj+ (5t − t2 )kˆ

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