calc

Consider the vector function given below.
r(t) =

7t, 3 cos t, 3 sin t

(a) Find the unit tangent and unit normal vectors T(t) and N(t).

i found T(t) but I can't get N(t)

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asked by sara
  1. If you found T(t) = r'/|r'|, then you should be able to get

    N(t) = T'/|T'|

    Where do you get stuck?

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    posted by Steve

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