%@P:tableau {\setlength{\TabTitreL}{1cm} \begin{MonTableau}{2}{7}{1} \TabNewCol{0} \rTabPut{B}{-0.5}{0.25}{$x$} \rTabPut{B}{-0.5}{0.25}{\TabTitre{sgn.}{g'(x)}} \rTabPut{B}{-0.5}{0.25}{\TabTitre{var.}{g}} \TabNewCol{.05} \rTabPut{B}{0}{0.25}{$0$} \rTabPut[3]{B}{0}{0.25}{} \rTabPut[3]{B}{0}{0.25}{} \TabNewCol{.05} \rTabPut{Bl}{.1}{0.25}{} \rTabPut{Bl}{.1}{0.25}{} \rTabPut{Bl}{.1}{0.7}{$+\infty$} \TabNewCol{0.4} \rTabPut{B}{0}{0.25}{$1$} \rTabPut{B}{0}{.4}{$0$} \rTabPut{B}{0}{.1}{\qquad } \TabNewCol{1} \rTabPut{Br}{-0.1}{0.25}{$+\infty$} \rTabPut{Br}{-0.1}{0.7}{} \rTabPut{Br}{-0.1}{0.7}{$+\infty$} \TabFleche{C2}{D2}\TabFleche{D2}{E2} \rput(.2,.5){$-$} \rput(.7,.5){$+$} \end{MonTableau}}