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Unit Tangent Vector

I am asked to find the unit tangent vector at t=2 for the following :

vector r(t) = t i + t^3 j + 3t k

How do I do this problem and what is the final answer?

Solution Preview

First, we find the tangent vector which is


When t=2, it becomes ...

Solution Summary

Unit Tangent Vectors are investigated. The solution is detailed and well presented.