# Polygamma function Calculator

## Calculates the Polygamma function Ψn(a).

 order n -1 0 1 2 3 4  n=-1,0,1,2,3,4 a 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit
 $\normal Polygamma\ function\ \Psi_n(a)\\[10](1)\ \Psi_{n-1}(a)={\large\frac{d^n}{da^n}}ln\Gamma(a),\hspace{10}n=-1,0,1,2,3,4\\[10](2)\ \Psi_{\small -1}(a)=ln\Gamma(a)\\(3)\ \Psi(a)=\Psi_{\small 0}(a)={\large\frac{d}{da}}ln\Gamma(a)\hspace{20}Digamma\\$
Polygamma function
 [1-2] /2 Disp-Num5103050100200
[1]  2017/03/28 18:22   Male / 60 years old level or over / High-school/ University/ Grad student / Useful /
Purpose of use
Calculation of the influence of weak localization on electrical resistivity.
Comment/Request
I would like to have digamma calculation (table of data and chart). Could you kindly help me. Thank P. V.
[2]  2009/08/10 19:50   Male / 30 level / A researcher / Very /
Purpose of use
Comparison.
Comment/Request
Nice.

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