%% %% An UIT Edition example %% %% Example 06-03-5 on page 90. %% %% 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{375.57637pt} \AtBeginDocument{\setlength\parindent{0pt}} \setcounter{equation}{33} \renewcommand\theequation{6.\arabic{equation}} \StartShownPreambleCommands \usepackage{amsmath} \StopShownPreambleCommands \begin{document} \begin{multline} A = \lim_{n\rightarrow\infty}\Delta x\left(a^{2}+\left(a^{2}+2a \Delta x +\left(\Delta x\right)^{2}\right)\right.\\ +\left(a^{2}+2\times2a\Delta x+2^{2}\left(\Delta x\right)^{2}\right)\\ +\left(a^{2}+2\times3a\Delta x+3^{2}\left(\Delta x\right)^{2}\right)\\ + \ldots\\ \left.+\left(a^{2}+2\times(n-2)a\Delta x+(n-2)^{2} \left(\Delta x\right)^{2}\right)\right)\\ \left.+\left(a^{2}+2\times(n-1)a\Delta x+(n-1)^{2} \left(\Delta x\right)^{2}\right)\right)\\ = \frac{1}{3}\left( b^{3}-a^{3}\right) \end{multline} \end{document}