\input $HOME/tex_doc/format/myplain.tex \let \exo \Exo \date {12 novembre 2002} \classe {s1 mai} \duree {1h} \titre {\twentybf Devoir surveillé n\raise 5pt \hbox {\tenbf o} 2} \def \datapath {% $HOME/tex_doc/lycee/database/btsmai/analyse/exp/} \bareme {3} \input \datapath etud_001.tex \def \datapath {% $HOME/tex_doc/lycee/database/btsmai/analyse/trigo/} \bareme {3} \input \datapath equa_006.tex \def \datapath {% $HOME/tex_doc/lycee/database/btsmai/analyse/exp/} \bareme {14} \input \datapath etud_009.tex \bye