hello friends!! I was just wondering, what was the derivative of gamma function?

$\displaystyle \frac{d}{dx}\Gamma(x)=?$

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- Mar 4th 2012, 10:25 PMOzymandiasderivative of gamma function
hello friends!! I was just wondering, what was the derivative of gamma function?

$\displaystyle \frac{d}{dx}\Gamma(x)=?$ - Mar 4th 2012, 11:10 PMsbhatnagarRe: derivative of gamma function
$\displaystyle \frac{d}{dx}\Gamma(x)=\Gamma ' (x)=\psi(x) \, \Gamma(x) $

where $\displaystyle \psi(x) $ is the Digamma Function.