%@P:tableau {\setlength{\TabTitreL}{1cm} \begin{MonTableau}{2}{5}{1} \TabNewCol{0} \rTabPut{B}{-0.5}{0.25}{$x$} \rTabPut{B}{-0.5}{0.25}{\TabTitre{sgn.}{\varphi'(x)}} \rTabPut{B}{-0.5}{0.25}{\TabTitre{var.}{\varphi}} \TabNewCol{0} \rTabPut{Bl}{0.1}{0.25}{$-\infty$} \rTabPut{Bl}{0.1}{0.1}{} \rTabPut{Bl}{0.1}{0.1}{$0$} \TabNewCol{1} \rTabPut{Br}{-0.1}{0.25}{$+\infty$} \rTabPut{Br}{-0.1}{0.7}{} \rTabPut{Br}{-0.1}{0.7}{$+\infty$} \TabFleche{B2}{C2} \rput(.5,.5){$+$} \end{MonTableau}}