$\displaystyle \int\frac{x}{(2x+1)^4} dx$

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- Aug 21st 2010, 07:03 AMPunchintegration
$\displaystyle \int\frac{x}{(2x+1)^4} dx$

- Aug 21st 2010, 07:08 AMyeKciM
- Aug 21st 2010, 07:17 AMPunch
edited.. sorry for that mistake

- Aug 21st 2010, 07:28 AMDefunkt
Substitute $\displaystyle u=2x+1$ so that $\displaystyle dx = \frac{du}{2}$

- Aug 21st 2010, 07:30 AMPlato
Let $\displaystyle u=2x+1$ and then $\displaystyle \displaystyle x=\frac{u-1}{2}~\&~dx=\frac{du}{2}$.