LaTeX

LaTeX is a computer typesetting language for mathematical markup. It was designed and developed by Leslie Lamport as an extension of TeX, an existing typesetting language developed by Donald Knuth. LaTeX is used nearly universally by mathematicians, physicists, engineers, computer scientists and other scientists in need of technical formatting in their publications.

Examples

\documentclass{12pt}[article] %Specifies the font size and the document style
\begin{document}              %Begins the document
\sqrt{\frac{1}{4}} = \frac{1}{2}
\end{document}                %Document closing tag

This LaTeX code would output:

${\sqrt {\frac {1}{4}}}={\frac {1}{2}}$

Highly complex mathematical expressions are also possible; for example, the following code:

 \operatorname{erfc}(x) =
 \frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt =
 \frac{e^{-x^2}}{x\sqrt{\pi}}\sum_{n=0}^\infty (-1)^n \frac{(2n)!}{n!(2x)^{2n}}

would output:

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \operatorname{erfc}(x) = \frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt = \frac{e^{-x^2}}{x\sqrt{\pi}}\sum_{n=0}^\infty (-1)^n \frac{(2n)!}{n!(2x)^{2n}} }

The style declaration, beginning and closing end tags are omitted for brevity.

External Links

• LaTeX – A document preparation system