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Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve.

r(t) = (t)i + (2/3)t^(3/2)k,

0 less than or equal to t less than or equal to 8

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All but this one of your 22 posts have been removed.

Once you write up YOUR THOUGHTS about how to solve all these, please re-post, and someone here will be happy to comment.
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