\documentclass[12pt]{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{rsfs}

\usepackage{graphicx}

%%\usepackage[usenames]{color}
\usepackage{color}

\textheight 230mm
\topmargin 5mm
\textwidth 160mm
\oddsidemargin -2mm

\pagestyle{myheadings}
\markright{(Pattern Recognition)}

\newtheorem{formula}{Rule}
\newtheorem{example}{Example}
\newtheorem{excersize}{Excersize}
\newtheorem{algorithm}{Algorithm}

\begin{document}
\thispagestyle{empty}


\color{blue}
\noindent
{\bf Truely turn to blue? Wow!}

\color{red}
\noindent
{\bf Then what about red? Wow!}

\color{black}



\noindent
Test AMS-LaTeX          \\
$\mathfrak{D}$                  %% with amsmath
$\mathbb{D}$                    %% with amsmath
$\mathscr{D}$           \\      %% only with \usepackage{rsfs}

\noindent
$x$                     \\
$\vec{x}$               \\ 
$\Vec{x}$               \\

\noindent
$\mbox{\boldmath x}$    \\
$\mbox{\bf x}$          \\

\noindent
abcd ABCD \\

\noindent
\mathversion{bold}     %% not changed
{abcd ABCD}

\noindent
$\mathcal{ABCD}$           \\

\noindent
$\boldsymbol{\mu x}$ \\   %% only with \usepackage{amsmath}
$\boldsymbol{\mu}\cdot\boldsymbol{x}$

$\mathfrak{D}$



\end{document}


%% \begin{figure}[bhtp]\label{fig:well-separate-gaussian}
%%  \begin{center}
%%    \epsfile{file=two-gaussian-2.eps,width=15cm,height=5cm}
%%  \end{center}
%%  \caption{An example}
%% \end{figure}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=5cm,height=5cm]{blief-net.eps}
\end{center}
\end{figure}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=5cm,height=5cm]{blief-net-2.eps}
\end{center}
\end{figure}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=15cm,height=5cm]{nn-for-bayes.eps}
\end{center}
\end{figure}

\begin{figure}[bhtp]
\begin{center}
\includegraphics[width=15cm,height=5cm]{nn-for-bayes-2.eps}
\end{center}
\end{figure}



