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Asked Jan 27, 2020
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Exercises 3–6, write a in the form a = a TT + a NN at the given value of t without finding T and N.

3. r(t) = (t + 1)i + 2tj + t2k, t = 1

4. r(t) = (t cos t)i + (t sin t)j + t2k,t=0

5. r(t) = t2i + (t + (1/3)t3 t = 0 )j + (t - (1/3)t3 ,t=0

6. r(t) = (et cos t)i + (et sin t)j + SQRT(2)et k, )k, t = 0

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Derivative

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