I (Built-in Mathematica Symbol)

I represents the imaginary unit Sqrt[-1].

RowReduce (Built-in Mathematica Symbol)

RowReduce[m] gives the row-reduced form of the matrix m.

Sign (Built-in Mathematica Symbol)

Sign[x] gives -1, 0, or 1 depending on whether x is negative, zero, or positive.

Equations in One Variable (Mathematica Tutorial)

The main equations that Solve and related Mathematica functions deal with are polynomial equations. It is easy to solve a linear equation in x. One can also solve quadratic ...

Streams and Low-Level Input and Output (Mathematica Tutorial)

Files and pipes are both examples of general Mathematica objects known as streams. A stream in Mathematica is a source of input or output. There are many operations that you ...

Performance (DatabaseLink Tutorial)

When large amounts of data are being transferred between Mathematica and a database, you may find that the operations are slow. In this case it may be advantageous to use a ...

GPU Computing (Mathematica Guide)

With Mathematica, the enormous parallel processing power of Graphical Processing Units (GPUs) can be used from an integrated built-in interface. Incorporating GPU technology ...

AutoIndent (Built-in Mathematica Symbol)

AutoIndent is an option for Style and Cell that specifies what automatic indentation should be done at the beginning of a new line after an explicit return character has been ...

ButtonNotebook (Built-in Mathematica Symbol)

ButtonNotebook[] gives the notebook, if any, that contains the button which initiated the current evaluation.

FrontEndToken (Built-in Mathematica Symbol)

FrontEndToken["cmd"] is an object which represents a front end command token, typically corresponding to a front end menu item, to be executed by FrontEndExecute. ...