Digamma
[this page | pdf]
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.
NAVIGATION LINKS
Contents | Prev | Next
Output type / Parameter details
Output type: Double
| Parameter Name | Variable Type | Description |
| x | Double | Value at which to compute function |
Links to:
-
Interactively run function
-
Interactive instructions
-
Example calculation
-
Output type / Parameter details
-
Illustrative spreadsheet
-
Other Special Functions
-
Computation units used
Note: If you use any Nematrian web service either programmatically or interactively then you will be deemed to have agreed to the Nematrian website License Agreement