---- % cat try.tex \documentclass{jarticle} \begin{document} \[ \int dx = x + C \] \end{document}
% ptex try.tex This is pTeX, Version p2.1.10, based on TeX, Version 3.14159 (EUC) (Web2C 7.3.1) (try.tex ! Undefined control sequence. l.1 \documentclass {jarticle} ? ---- TeX関係の環境変数色々あるけど,何をどのように設定すればいいのか 判りません.