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Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = 2ti + 3/2k, Ost= 12 The

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Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = 2ti + 3/2k, Ost= 12 The curve's unit tangent vector is + + K. (Type exact answers, using radicals as needed.) The length of the indicated portion of the curve is units. (Type an integer or a simplified fraction.)

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