latex example

tex_ex.tex

\documentclass[a4paper,12pt]{article} %document class declaration (article, report, book, etc) has to go first
\usepackage{times} %package imports times new roman font
\usepackage[margin=1in]{geometry} %change margins to 1in

\begin{document}
\renewcommand{\rmdefault}{ptm}

\setlength{\parindent}{0mm} %set indentation at start of new paragraphs
\setlength{\parskip}{0mm} %set white space between paragraphs

\textbf{\LaTeX\ testing}

\emph{Introduction}

\setlength{\parskip}{5mm}

This is my first \LaTeX\ document.  \LaTeX\ can be written in a text editor.  A good base system for using \LaTeX\ is MiKTeX.

\textit{This is an example of italics.}  Learning \LaTeX\ should be a good use of my time and an excellent way of procrastinating.  Here's some more stuff.

A formula...

$y_k = f_k \left(\sum\limits_{j=1}^k w_{jk}f_j \left( \sum\limits_{i=1}^j w_{ij}x_i\right) \right) $

An equation...

\begin{equation}
z_n = \frac{x_n-\bar{x}}{\sigma_x}
\end{equation}


\end{document}