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April 21, 2015

April 21, 2015

Posted by **Stuck** on Thursday, April 1, 2010 at 4:53pm.

I understood how to do it with just a number as the numerator, but I can't figure it out with x in the numerator..

- Calculus -
**Damon**, Thursday, April 1, 2010 at 10:22pmantiderivative of f(x)= (2x)/((x^2)+1)

let u = x^2+1

then du = 2 x dx

and you have

du/u

ln u + c

ln (x^2+1) + c

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