1 Mozilla/5.0 (Windows NT 6.0; rv:8.0) Gecko/20100101 Firefox/8.0 /rde/contents/library/ps2img/cgi-bin/eqn2gif.cgi 157.118.3.12 1325525082 2012/01/03 02:24:42 \documentclass[12pt,fleqn]{jsarticle} %\usepackage{pxfonts} \begin{document} \setlength{\mathindent}{1zw} (2) $\displaystyle \frac{3x+2y}{2}-\frac{5x-y}{4}$ \[\displaystyle___(______) =\frac{1}{2}(3x+2y)-\frac{1}{4}(5x-y)\] \[\displaystyle____________=\frac{3}{2}x+y-\frac{5}{4}x+\frac{1}{4}y\] \[\displaystyle____________=\left(\frac{3}{2}-\frac{5}{4}\right)x+\left(1+\frac{1}{4}\right)y\] \[\displaystyle____________=\frac{1}{4}x+\frac{5}{4}y\] \end{document} 2 [画像は表示できません] ______ エラーがありました 使用できないTeXコマンドがありました \documentclass \usepackage \begin{document} \setlength \mathindent \end{document} ! Missing } inserted. <inserted text> } l.22 (2) $ \displaystyle \frac{3x+2y}{2}-\frac{5x-y}{4}$% ? ! Emergency stop. <inserted text> } l.22 (2) $ \displaystyle \frac{3x+2y}{2}-\frac{5x-y}{4}$% 20120103_022417 http://www.mech.tohoku-gakuin.ac.jp/rde/contents/library/ps2img/eqn2gif_online.html Tue Jan 3 02:24:42 2012