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%%  Ein Beispiel der DANTE-Edition
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%%  2. Auflage
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%%  Beispiel 12-04-17 auf Seite 609.
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%%  Copyright (C) 2016 Herbert Voss
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%%  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.
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%%  See http://www.latex-project.org/lppl.txt for details.
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\documentclass[fleqn]{exaarticle2}
\pagestyle{empty}
\setlength\textwidth{169.16928pt}
\setlength{\parindent}{0em}
%StartShownPreambleCommands
\usepackage{amsmath}
\usepackage{mathspec}
\setmathsfont(Latin){Bitstream Vera Sans}
\setmathsfont(Digits,Greek)%
  [Numbers={Lining,Proportional}]{Minion Pro}
\setmathrm{Bitstream Vera Sans}
%StopShownPreambleCommands
\begin{document}
$y=f(1.12345)=3x^2-2x=\text{?}$ \par
$\alpha\beta\gamma$\par
\[ \int\limits_1^\infty
   \frac1{x^2}\mathrm{d}x=2 \]
\end{document}