Mathlean · Online math workspace
Polygamma function calculator
Evaluate higher derivatives of the logarithmic Gamma function.
How to use this calculator
Edit PolyGamma(order,argument). Order 1 is trigamma; at argument 1 the value is pi squared over 6.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
Use a nonnegative derivative order and avoid poles. Order zero corresponds to digamma.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.