Dear all,

I want to use Gamma distribution. It seems that there must be some constraints on Gamma distribution parameters, because:

1- the probability values in some cases become greater than one!

2-if beta is small and alpha is larges => beta^alpha=0 => probability=Inf

3-if alpah is larges => gamma(alpha)=Inf => probability=NaN

Dose anybody knows the constraints and what I can do in these situations?

Thanks