# Special Functions

Overview of built-in functions in the Special group

### Index of special functions

Calculates the beta function
Error function in the integrating the normal distribution
Complementary error function in the integration of the normal distribution
Delivers the faculty natural numbers or a list
Calculates the logarithm of the faculty
Calculates the incomplete regulated beta function
Inverse error function when integrating the normal distribution
Inverse complementary error function in the integration of the normal distribution
Inverse Digamma Function of natural numbers or lists
(Digamma) Logarithmic derivative of the gamma function