%% %% Ein Beispiel der DANTE-Edition %% %% %% 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. %% %% %%Run also: >> << % Show page(s) 1 %% \documentclass[]{article} \pagestyle{empty} \setlength\textwidth{190.324pt} \setlength\parindent{0pt} \usepackage{amsmath} \begin{document} \begin{subequations} \begin{align} y &= d\\ y &= cx+d\\ y &= bx^{2}+cx+d\\ y &= ax^{3}+bx^{2}+cx+d \end{align} \end{subequations} \end{document}