\input $HOME/tex_doc/format/myplain.tex \magnification 1200 \advance \vsize by 20mm \let \exo \Exo \withoutcorrigbody \date {21 janvier 2004} \classe {2L} \duree {1h} \classification {\fourteenbf NOM~:}{} \titre {\twentybf Devoir surveillé n\raise 5pt \hbox {\tenbf o} 7} \def \datapath {% $HOME/tex_doc/lycee/database/2nd/geometrie/vecteurs/} \bareme 4 %\input \datapath align_001.tex \bareme 4 \input \datapath align_004.tex \bareme 3 %\input \datapath calc_013.tex \bareme 2 \input \datapath config_005.tex \bareme 4 \input \datapath coord_001.tex \bareme 3 \input \datapath calc_019.tex \bareme 7 \input \datapath calc_012.tex \classification {}{} \bye