1/(4+3x^2) ?(adsbygoogle = window.adsbygoogle || []).push({});

I'm trying to use this integration formula to solve for this

du

----------

a^2+u^2

I know my a would be 2, but what would my u be? I tried u = 3x and du=3dx and du/3=dx

but (3x)^2 would be 9x^2

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# Homework Help: Help finding the indefinite integral

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