%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example 3-1-9 on page 85.
%%
%% Copyright (C) 2004 Frank Mittelbach, Michel Goossens,
%%    Johannes Braams, David Carlisle, and Chris Rowley
%%
%% 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.
%%

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{207.0pt}

\StartShownPreambleCommands
\usepackage{exscale,relsize}
\StopShownPreambleCommands
\begin{document}
\[ \mathsmaller\sum_{i=1}^n \neq
 \sum_{i=1}^n \neq \mathlarger\sum_{i=1}^n
\qquad  \mathsmaller\int_0^\infty \neq
 \int_0^\infty \neq \mathlarger\int_0^\infty
\]
\end{document}
