Ok so I have to find the arc length from t=1 to t=2.(adsbygoogle = window.adsbygoogle || []).push({});

[tex]

\begin{array}{l}

L = \int_a^b {|r'(t)|dt} \\

|r'(t)| = \frac{{2(1 + 2t^4 )}}{{t^3 }} \\

\end{array}

[/tex]

And I have completely forgotten how to integrate fractions.....

Oh wait... i THINK i know what to do. Should i set u=1+2t^4?

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# Forgot how to integrate fractions

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