Mathematica 8 introduces numerous new usability features, including a whole new paradigm for entering input using free-form linguistics that no longer require even ...

The raw SQL command SELECT selects and returns data from a database. An alternative is to use the Mathematica command SQLSelect, described in "Selecting Data". If you find ...

Simplify[expr] performs a sequence of algebraic and other transformations on expr, and returns the simplest form it finds. Simplify[expr, assum] does simplification using ...

IntegerPartitions[n] gives a list of all possible ways to partition the integer n into smaller integers. IntegerPartitions[n, k] gives partitions into at most k integers. ...

Here is a system of two ODEs whose coefficient matrix has real and distinct eigenvalues. This solves the system. Note that the general solution depends on two arbitrary ...

FrameTicks is an option for 2D graphics functions that specifies tick marks for the edges of a frame.

TimeValue[s, i, t] calculates the time value of a security s at time t for an interest specified by i.

Using a variety of state-of-the-art methods, Mathematica provides immediate functions for detecting and extracting features in images and other arrays of data. Mathematica ...

"Interrupting Calculations" describes how you can interrupt a Mathematica computation by pressing appropriate keys on your keyboard. In some cases, you may want to simulate ...

PiecewiseExpand[expr] expands nested piecewise functions in expr to give a single piecewise function. PiecewiseExpand[expr, assum] expands piecewise functions using ...