GammaRegularized

GammaRegularized[a, z] is the regularized incomplete gamma function Q(a,z).

Examples

Compute regularized gamma:

GammaRegularized[2, 1]
(* 2/E *)

Numerical value:

N[GammaRegularized[3, 2]]
(* 0.676676 *)

Please visit the official Wolfram Language Reference for more details.