<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">%% 
%%  Ein Beispiel der DANTE-Edition
%%  Mathematiksatz mit LaTeX
%%  3. Auflage
%%  Beispiel 04-01-1 auf Seite 34.
%%  Copyright (C) 2018 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[10pt]{screxa}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\usepackage{kpfonts}
%StartShownPreambleCommands
\setlength\arraycolsep{1.4pt}
%StopShownPreambleCommands
\begin{document}
\[
  z=f(x,y) \rightarrow
  \begin{array}[b]{|rl|} y &amp;=f(x)\\ y &amp;= 3x^2     \end{array} \rightarrow
  \begin{array}[c]{|rl|} x &amp;=f(u)\\ x &amp;= \sqrt{u} \end{array} \rightarrow
  \begin{array}[t]{|rl|} v &amp;=f(w)\\ v &amp;= u^2-w^3  \end{array} \rightarrow
  f(w)
\]
\end{document}
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