Gamma

Gamma[z] is the Euler gamma function Γ(z). Gamma[a, z] is the incomplete gamma function.

Examples

Gamma function values:

Gamma[5]
(* 24 - equals (5-1)! = 4! *)

Gamma[1/2]
(* Sqrt[Pi] *)

Numerical evaluation:

N[Gamma[3.5]]
(* 3.32335 *)

Incomplete gamma function:

Gamma[2, 1] // N
(* 0.735759 *)

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