Find the unit tangent vector T(t) at the given point on the curve. $$r(t) = \langle t^3 + 1, 2t - 5, \frac{4}{t} \rangle, (2, -3, 4)$$
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$$r'(t) = \langle 3t^2, 2, -\frac{4}{t^2} \rangle$$ Show more…
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