Ok, So i need to find the arc length of the curve r(t) = < 2t, e^t, e^(-t)> from 0<=t<=1(adsbygoogle = window.adsbygoogle || []).push({});

so L should be the integral from 0 to 1 over the magnitude of r'(t) dt. So what I'm getting is

S_{0}^{1}sqrt(4 + e^{2t}+ e^{-2t})dt

and this I'm not sure how to do this integral. Anyhelp?

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# Homework Help: Simple integral

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