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'''LaTeX''' is a [[computer language|computer typesetting language]] for [[mathematical]] [[markup]]. It was designed and developed by Leslie Lamport<ref>Gratzer, G. ''First Steps in LaTeX''. Birkhauser, Boston; p. xiv (1999) [http://books.google.com/books?id=mLdg5ZdDKToC&lpg=PP1&pg=PR14#v=onepage&q&f=false]</ref> as an extension of TeX, an existing typesetting language developed by [[Donald Knuth]]. LaTeX is used nearly universally by [[mathematician]]s, [[physicist]]s, [[engineer]]s, [[computer scientist]]s and other scientists in need of technical [[formatting]] in their publications.

'''LaTeX''' is a [[computer language|computer typesetting language]] for [[mathematical]] [[markup]]. It was designed and developed by Leslie Lamport<ref>Gratzer, G. ''First Steps in LaTeX''. Birkhauser, Boston; p. xiv (1999) [https://books.google.com/books?id=mLdg5ZdDKToC&lpg=PP1&pg=PR14#v=onepage&q&f=false]</ref> as an extension of TeX, an existing typesetting language developed by [[Donald Knuth]]. LaTeX is used nearly universally by [[mathematician]]s, [[physicist]]s, [[engineer]]s, [[computer scientist]]s and other scientists in need of technical formatting in their publications.

==Examples==

==Examples==

  \documentclass{12pt}[article] %Specifies the font size and the document style

  \documentclass[12pt]{article}       %Specifies the font size and the document style

  \begin{document}             %Begins the document

  \begin{document}                     %Begins the document

  \sqrt{\frac{1}{4}} = \frac{1}{2}

  $$\sqrt{\frac{1}{4}} = \frac{1}{2}$$ %Dollar sign ($) delimits math expressions; $$ delimits math expressions displayed centered on their own line

  \end{document}               %Document closing tag

  \end{document}                       %Document closing tag

This LaTeX code would output:

This LaTeX code would output:

<math>\sqrt{\frac{1}{4}} = \frac{1}{2}</math>

<center><math>\sqrt{\frac{1}{4}} = \frac{1}{2}</math></center>

Highly complex mathematical expressions are also possible; for example, the following code<ref>[https://meta.wikimedia.org/wiki/Help:Displaying_a_formula Mediawiki Help:Displaying a Formula]</ref>:

Highly complex mathematical expressions are also possible; for example, the following code:<ref>[https://meta.wikimedia.org/wiki/Help:Displaying_a_formula Mediawiki Help:Displaying a Formula]</ref>

   \operatorname{erfc}(x) =

   \operatorname{erfc}(x) =

   \frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt =

   \frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt =

  </math>

  </math>

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

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

 

==References==

==References==

<references/>

<references/>

==External Links==

==External links==

* [http://www.latex-project.org/ LaTeX – A document preparation system]

* [http://www.latex-project.org/ LaTeX – A document preparation system]