%%
%% An UIT Edition example
%%
%% Example 04-08-9 on page 54.
%%
%% 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{201.70511pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\StartShownPreambleCommands
\StopShownPreambleCommands
\begin{document}
$\begin{array}{rcl}
y & = & d\\
y & = & c\frac{1}{x}+d\\
y & = & b\frac{1}{x^{2}}+cx+d
\end{array}$
{\renewcommand\arraystretch{2}% keep local
$\begin{array}{rcl}
y & = & d\\
y & = & c\frac{1}{x}+d\\
y & = & b\frac{1}{x^{2}}+cx+d
\end{array}$}
\end{document}
