Using the objects described in "Introduction to Patterns", you can set up patterns for many kinds of expressions. In all cases, you must remember that the patterns must ...

One of the important features of Mathematica is that it can do symbolic, as well as numerical calculations. This means that it can handle algebraic formulas as well as ...

Constructing Matrices Getting and Setting Pieces of Matrices Scalars, Vectors, and Matrices

SetFileDate["file"] sets the modification and access dates for a file to be the current date.

Printing Environment determines which style environment to use for printing.

Mathematica provides tools to simplify a diverse range of mathematical expressions to make them easier to understand, or more efficient to compute.

Printing Options sets options for printing a notebook. Mathematica saves these settings with the notebook.

$CharacterEncoding specifies the default raw character encoding to use for input and output functions.

Headers and Footers sets options for printing a notebook.

NIntegrate[f, {x, x_min, x_max}] gives a numerical approximation to the integral \[Integral]_x_min^x_max\ f\ d \ x. NIntegrate[f, {x, x_min, x_max}, {y, y_min, y_max}, ...] ...