%% 
%%  An UIT Edition example
%% 
%%  Example 10-04-5 on page 205.
%% 
%%  Copyright (C) 2010 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{375.57637pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\setcounter{equation}{3}
\renewcommand\theequation{10.\arabic{equation}}
\StartShownPreambleCommands
\usepackage{amsmath}
\StopShownPreambleCommands
\begin{document}
\begin{equation}
  \binom{x_R}{y_R} = \underbrace{r}_{\text{scaling}}\times%
    \underbrace{\begin{pmatrix}
                  \sin\gamma & -\cos\gamma \\ \cos\gamma & \sin\gamma \\
                \end{pmatrix}}_{\text{rotation}}
  \binom{x_K}{y_K} + \underbrace{\binom{t_x}{t_y}}_{\text{translation}}
\end{equation}
\end{document}
