Help: Gamma Function

The Gamma ([Maple Math]) function may be defined for X > 0 by

[Maple Math]

and for all non-integer X < 0 using analytic continuation or the functional equation [Maple Math] . If X is a positive integer, [Maple Math] .

Due to the risk of numerical overflow, we leave Gamma(X) undefined if X > 34.55, or if X is very close to 0 or a negative integer.
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