%@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.}{f'(x)}} \rTabPut{B}{-0.5}{0.25}{\TabTitre{var.}{f}} \TabNewCol{.05} \rTabPut{B}{0}{0.25}{$-\frac{\pi}{2}$} \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}{0.10}{$-\infty$} \TabNewCol{0.67} \rTabPut{B}{0}{0.25}{$1$} \rTabPut{B}{0}{.4}{$0$} \rTabPut{B}{0}{.7}{$\frac{\pi}{2}$} \TabNewCol{0.95} \rTabPut{Br}{-.1}{0.25}{} \rTabPut{Br}{-.1}{0.25}{} \rTabPut{Br}{-.1}{0.10}{$-\infty$} \TabNewCol{.95} \rTabPut{B}{0}{0.25}{$\frac{\pi}{2}$} \rTabPut[3]{B}{0}{0.7}{} \rTabPut[3]{B}{0}{0.7}{} \TabFleche{C2}{D2}\TabFleche{D2}{E2} \rput(.33,.5){$+$}\rput(.825,.5){$-$} \end{MonTableau}}