I need help with this integral ! $\displaystyle \int(x+1) e ^{ -5x} dx$
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Originally Posted by littlesohi I need help with this integral ! $\displaystyle \int(x+1) e ^{ -5x} dx$ Use integration by parts.
Originally Posted by littlesohi I need help with this integral ! $\displaystyle \int(x+1) e ^{ -5x} dx$ integration by parts ... $\displaystyle u = x+1$ , $\displaystyle dv = e^{-5x} \, dx$
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