Calculus 3 Lecture Notes, Section 11.4

Thus, the unit tangent vector . T (t) for any value of t is defined by: T (t) will always points in the direction of the orientation of the curve. Practice: Find the unit tangent vector . T (t) for a circle of radius a traced out by the vector-valued function . Find the unit tangent vector . T (t) for the parabola traced out by the vector-value ... ................
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