Learning Mathematica: Using the Standard Packages
Volume 3, Issue 2
One of the virtues of Mathematica is its extensibility. If the
more than 800 built-in functions are not sufficient for the problem you
are solving, you may find the functions you need in a package, a
file containing definitions of functions written in the Mathematica
language. This article explains how to load and use the standard packages
distributed with Mathematica.