\documentclass[12pt]{article} \usepackage{2130} \headers{\footnotesize\bf Memorial University of Newfoundland} {} {\footnotesize\bf Department of Mathematics and Statistics} \footers{\footnotesize Applied Mathematics 2130} {\footnotesize Sample \LaTeX} {\footnotesize Page \thepage} \underheadoverfoot \begin{document} \begin{center} {\Large\bf Just a sample document} \end{center} You can typeset plain text as with any other typesetting software. The fun part is when you wish to display mathematical symbols. You can have mathematics embedded in the text like $y = \sin (x)$ or you can display mathematics on a line all its own like \[ y = x^2 + \sqrt{x^4 + 1}. \] If you wish to have a displayed line of mathematics along with a number you do \begin{equation} f(x) = \int_1^x \frac{1}{z} dz. \label{eq:first} \end{equation} The label command is not required but if at a later point in your text you wish to make a reference to that equation (\ref{eq:first}) you can do it with the command \begin{verbatim} (\ref{eq:first}). \end{verbatim} The backslash is the symbol used to start any \LaTeX\/ command and the curly brackets are used for command arguments. You can generate itemized lists: \begin{itemize} \item first item, \item second item, \item etc ... \end{itemize} and you can also generate numbered lists: \begin{enumerate} \item first item, \item second item, \item etc ... \end{enumerate} There are lots and lots of special symbols: \[ \alpha,\ \beta,\ \eta,\ \iota,\ \zeta,\ \omega,\ \Omega,\ \sigma,\ \Sigma, \ \int,\ \infty,\ \ldots \] There are commands for creating arrays like: \[ \left[ \begin{array}{cc} a & b \\ c & d \\ \end{array} \right]. \] and there are some for multi-line equations like: \begin{eqnarray*} \cos(2\theta) &=& \cos^2(\theta) - \sin^2(\theta) \\ &=& 2\cos^2(\theta) - 1 \\ &=& 1 - 2\sin^2(\theta) \end{eqnarray*} In that last command (look in the .tex file), the ``*'' suppresses the printing of line numbers. Remove that asterisk and we get \begin{eqnarray} \cos(2\theta) &=& \cos^2(\theta) - \sin^2(\theta) \\ &=& 2\cos^2(\theta) - 1 \\ &=& 1 - 2\sin^2(\theta) \end{eqnarray} There are other commands that will permit you to typeset tables of data (look up the {\bf tabular} environment), figures with captions (look up the {\bf figure} environment), bibliographies. In short, everything you can think of that publishers and authors make use of. \section*{Next in line} There are sectioning commands that create the appropriate amount of white space and changes to bold face fonts for the title of the section. Once again, an asterisk (look in the .tex file) suppresses numbering of sections. Remove it and the section numbers will be automatically generated. \section*{The bare bones} All papers have a beginning and an end. So it is for computer programs and so it is for {\tt .tex} documents. \smallskip\noindent All {\tt .tex} documents must begin with the statements \begin{verbatim} \documentclass{article} \begin{document} \end{verbatim} All {\tt .tex} documents must end with a \begin{verbatim} \end{document} \end{verbatim} so \LaTeX\/ knows when it is quitting time. At the start, between the {\tt documentclass} and {\tt begin\{document\}} statements, one can include a whole bunch of typesetting commands which adjust the layout of the page and load packages that are not part of the standard implementation, for example, packages to handle graphics. This area is called the {\tt preamble}. Look at the original {\tt .tex} file for this document to see what was put in the preamble and try to guess what it did. \end{document}