# Gammaln

#### Natural Log of the Gamma Function

The natural log of the Gamma function has the following form:

gammaln(x)

This function returns the natural log of the gamma function $\Gamma$(x), where $\Gamma$(x) is given by:

$\Gamma(x) = \int_{0}^{+\infty}t^{x-1}e^{-t}dt$