\[I^{\mu}f(x)=\sum_{s=0}^{n-1}(-1)^{s}\frac{\Gamma\left(1-s-\alpha\right)}{%
\Gamma\left(\mu+1-s-\alpha\right)}x^{\mu-s-\alpha}-\frac{\pi}{\sin\left(\pi%
\alpha\right)}\sum_{s=1}^{n}\frac{1}{\Gamma\left(\mu+1-s\right)}\frac{x^{\mu-s%
}}{(s-1)!}+\frac{1}{x^{n}}\delta_{n}(x).\]