As discussed in "The Structure of Graphics and Sound", Mathematica includes a full graphics programming language. In this language, you can set up many different kinds of ...

ExpIntegralEi[z] gives the exponential integral function Ei(z).

SinIntegral[z] gives the sine integral function Si(z).

SinhIntegral[z] gives the hyperbolic sine integral function Shi(z).

Functions for manipulating files. Different operating systems have different commands for manipulating files. Mathematica provides a simple set of file manipulation ...

The solutions to many second-order ODEs can be expressed in terms of special functions. Solutions to certain higher-order ODEs can also be expressed using AiryAi, BesselJ, ...

Mathematica allows almost every aspect of sessions to be customized, under full programmatic control.

The Virtual Book is a browsable electronic collection of all the Mathematica tutorials, grouped according to functionality. It is an excellent place for users of all levels ...

NSolve gives you a general way to find numerical approximations to the solutions of polynomial equations. Finding numerical solutions to more general equations, however, can ...

Exclusions is an option that specifies where to exclude in regions used by functions like Plot, Plot3D, and NIntegrate.