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*Gamma function is defined for all complex numbers except the non-positive integers.  
 
*Gamma function is defined for all complex numbers except the non-positive integers.  
 
*For complex numbers with a positive real part, it is defined via a convergent improper integral:
 
*For complex numbers with a positive real part, it is defined via a convergent improper integral:
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<math>\Gamma (z) = \int\limits_{0}^{\infty} x^{z-1} e^{-x} dx </math>
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*This function will return the result as NaN when the given number as negative or Non numeric.
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==Examples==
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#GAMMAFUNCTION(2) = 1.0000026676984093
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#GAMMAFUNCTION(45.3) = 8.308990531109891e+54
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#GAMMAFUNCTION(-3) = #N/A (#NUM!)
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==Related Videos==
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{{#ev:youtube|v=XZIVrkkYBRI|280|center|Gamma Function}}
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==See Also==
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*[[Manuals/calci/GAMMADIST | GAMMADIST]]
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*[[Manuals/calci/SUM  | SUM ]]
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==References==
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*[https://en.wikipedia.org/wiki/Gamma_function Gamma Function]
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*[[Z_API_Functions | List of Main Z Functions]]
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*[[ Z3 |  Z3 home ]]
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