\input $HOME/tex_doc/format/myplain.tex \magnification 1200 \advance \vsize by 20mm %\bookstyle \titrestyle {\twentybf } \withoutcorrigbody %\withoutexono \let \exo \Exo \date {11 mars 2004} \classification {Géométrie}{(7)} \classe {1 gm$_{\scriptscriptstyle 2}$} \titre {Barycentres} \def \datapath {% $HOME/tex_doc/lycee/database/1ere/sti/geometry/baryc/} \input \datapath intro_001.tex \input \datapath exo_007.tex \input \datapath exo_001.tex \input \datapath exo_002.tex \input \datapath exo_003.tex \end