Manuals/calci/GAMMALN

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GAMMALN(x)


  • is the number

Description

  • This function gives the natural logarithm of the absolute value of the Gamma Function.
  • The functions Digamma and Trigamma are the first and second derivatives of the logarithm of the Gamma Function.
  • This is often called the Polygamma function.
  • Gamma, Lgamma, Digamma and Trigamma functions are internal generic primitive functions.
  • Normally the number  , where   is an integer, is same as  .
 ,

where

 

it is for all complex numbers except the negative integers and zero.

  • This function will give the result as error when
  is non-numeric and  .

Examples

  1. GAMMALN(6) = 4.787491744416229
  2. GAMMALN(42) = 114.03421178146174
  3. GAMMALN(1) = 0.00018319639111644828(calci)
  4. GAMMALN(-10) = NAN, because  

Related Videos

GAMMA Distribution

See Also

References

Gamma Distribution*


List of Main Z Functions

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