\input $HOME/tex_doc/format/myplain.tex \magnification 1200 \let \exo \Exo \withoutcorrigbody \date {9 octobre 2002} \classe {2L} \duree {1h} \titre {\twentybf Devoir surveillé n\raise 5pt \hbox {\tenbf o} 2} \def \datapath {% $HOME/tex_doc/lycee/database/2nd/algebre/equations/} \bareme {5} \input \datapath pol_004.tex \bareme {3} \input \datapath frct_003.tex \bareme {3} \input \datapath frct_005.tex \bareme {4} \input \datapath geom_003.tex \def \datapath {% $HOME/tex_doc/lycee/database/2nd/algebre/nombres/} \bareme {5} \input \datapath approx_006.tex \bye