## My first LaTeX

Normally I use Microsoft word to type up all my equations. That’s a lot of work to do. I keep postponing using LaTex for years, but now I think the time arrives!!! This is my note on LaTex.

\documentclass{article}

\usepackage{amsmath}

%\usepackage{amssymbol}

\usepackage{amsfonts}

\title{My first LaTex}

\author{Bot}

\begin{document}

\maketitle

\begin{abstract}

This is a test

\end{abstract}

Hello\begin{eqnarray}

p(\bar x | \bar y) &=& \frac{1}{2} \exp \left \{ \sum _{i \in S} A_i(x_i,\bar y) +\sum _{i \in S} \sum_{j \in N_i} I_{ij}(x_i,x_j,\bar y) \right \}

\label{Drf}\\

A&=&mc+b\\

\rho \varrho \mathcal{N}

\Leftrightarrow

\end{eqnarray}

As shown in eq (\ref{Drf}), $ \rho A=mc+b$ mass is equivalent to energy.\end{document}

Note on impressive thing:

- summation, and parenthesis need not to be symmetry!!!
- equations can be reference easily
- in-line eqati0n can be done easily by $equation here$
- to run the compiler pdflatex filename.tex

Here are some useful links:

http://stackoverflow.com/questions/270121/best-latex-editor-for-windows

http://www.latexeditor.org/how_to_start.html