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Function Description

The digamma function,  is defined as the first derivative of the log gamma function, i.e.:



In practice, the Nematrian website uses a variant of the Lanczos approximation to compute the digamma function, see also gamma function.


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-          Interactively run function

-          Interactive instructions

-          Example calculation

-          Output type / Parameter details

-          Illustrative spreadsheet

-          Other Special Functions

-          Computation units used

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