In Exercises 21 and 22, write a in the form at t = 0
Chapter , Problem 21PE(choose chapter or problem)
In Exercises \(21 and 22\), write \(a\) in the form \(\mathrm{a}=\mathrm{a}_{\mathrm{T}} \mathrm{T}+\mathrm{a}_{\mathrm{N}} \mathrm{N} \text { at } \mathrm{t}=0\) without finding \(T\) and \(N\).
\(r(t)=(2+t) i+\left(t+2 t^{2}\right) j+\left(1+t^{2}\right) k\)
Equation Transcription:
Text Transcription:
21 and 22
a
a = a_T T + a_N N at t = 0
T
N
r(t) = (2 + t)i + (t + 2t^2)j + (1 + t^2)k
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