Alright, so here's a question from my online Calc 3 assignment. I know the formula for N(t), it is T'(t)/|T'(t)|. However I am still very stuck and confused as to how to find N. I can find B easily, it's just getting to N that is giving me problems.

Find the vectorsT,N, andBat the given point.

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(I found T correctly, it was <6/19, 18/19, 1/19>.)