Question: Evaluate s(t) = J ||r'(u)| | du for the Bernoulli spiral r (t) = ( et cos(4t), et sin(4t)). It is convenient to take -oo

Evaluate s(t) = J" ||r'(u)| | du for the Bernoulli spiral r (t) = ( et cos(4t), et sin(4t)). It is convenient to take -oo as the lower limit since s(-oo) = 0. Then use s to obtain an arc length parametrization of r (t). r1(s) = (

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