mathjs/docs/reference/functions/gamma.md

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Function gamma #

Compute the gamma function of a value using Lanczos approximation for small values, and an extended Stirling approximation for large values.

For matrices, the function is evaluated element wise.

Syntax #

math.gamma(n)

Parameters #

Parameter	Type	Description
n	number | Array | Matrix	A real or complex number

Returns #

Type	Description
number | Array | Matrix	The gamma of n

Examples #

math.gamma(5)       // returns 24
math.gamma(-0.5)    // returns -3.5449077018110335
math.gamma(math.i)  // returns -0.15494982830180973 - 0.49801566811835596i

See also #

combinations, factorial, permutations