\documentclass[a4paper]{article}
\usepackage{minimum,ifthen,tableau}
\usepackage{fancyvrb}
\usepackage{fvrb-ex}

\fvset{xrightmargin=0cm,frame=none}

\newcommand{\coordp}[2]
{\begin{pmatrix}
#1 \\ #2
\end{pmatrix}}

\newpsstyle{hachured}{fillstyle=hlines,hatchwidth=0.2pt,hatchsep=2pt}

\usepackage{bbm}
\newcommand{\GR}{\mathbbm{R}}
\newcommand{\txR}[1][x]{\forall #1 \in \GR \quad}

\newcommand{\ssi}[1][,]{si, et seulement si#1 }


\begin{document}

\begin{verbatim}
  {\setlength{\TabTitreL}{1cm}
  \begin{MonTableau}{3}{6}{.75}

  \small
  
  \TabNewCol{0}
  \rTabPut{Br}{-.15}{.25}{$x$}
  \rTabPut{Br}{-.15}{.40}{$x$}
  \rTabPut{Br}{-.15}{.40}{$x^2-12$}
  \rTabPut{Br}{-.15}{.40}{$f(x)$}

  \TabNewCol{0}
  \rTabPut{Bl}{.15}{.25}{$-\infty$}

  \TabNewCol{.25}
  \rTabPut{B}{0}{.25}{$-2\sqrt{3}$}
  \rTabPut[1]{B}{0}{.40}{}
  \rTabPut[2]{B}{0}{.40}{\TabZ}
  \rTabPut[2]{B}{0}{.40}{\TabZ}

  \TabNewCol{.5}
  \rTabPut{B}{0}{.25}{\TabZ}
  \rTabPut[2]{B}{0}{.40}{\TabZ}
  \rTabPut[1]{B}{0}{.40}{}
  \rTabPut[2]{B}{0}{.40}{\TabZ}

  \TabNewCol{.75}
  \rTabPut{B}{0}{.25}{$2\sqrt{3}$}
  \rTabPut[1]{B}{0}{.40}{}
  \rTabPut[2]{B}{0}{.40}{\TabZ}
  \rTabPut[2]{B}{0}{.40}{\TabZ}

  \TabNewCol{1}
  \rTabPut{Br}{-.1}{.25}{$+\infty$}
  
  \rput(.125,.5){$-$}\rput(.375,.5){$-$}\rput(.625,.5){$+$}\rput(.875,.5){$+$}
  \rput(.125,1.5){$+$}\rput(.375,1.5){$-$}\rput(.625,1.5){$-$}\rput(.875,1.5){$+$}
  \rput(.125,2.5){$-$}\rput(.375,2.5){$+$}\rput(.625,2.5){$-$}\rput(.875,2.5){$+$}
  
   \end{MonTableau}}
\end{verbatim}

Ce qui donne:

\begin{enumerate}

\begin{minipage}{8.2cm}

\item $\txR f(x)=x(x-2\sqrt{3})(x+2\sqrt{3})$.
\item Un produit de facteur est nul \ssi au moins est de ses facteurs
	est nul: $$f(x)=0\Leftrightarrow x\in\{-2\sqrt{3};0;2\sqrt{3}\}$$
\item Tableau de signes ci-contre:
	$$f(x)<0\Leftrightarrow x\in]-\infty;-2\sqrt{3}[\cup]0;2\sqrt{3}[$$
		
\end{minipage}\hfill
\begin{minipage}{7cm}
  {\setlength{\TabTitreL}{1cm}
  \begin{MonTableau}{3}{6}{.75}

  \small
  
  \TabNewCol{0}
  \rTabPut{Br}{-.15}{.25}{$x$}
  \rTabPut{Br}{-.15}{.40}{$x$}
  \rTabPut{Br}{-.15}{.40}{$x^2-12$}
  \rTabPut{Br}{-.15}{.40}{$f(x)$}

  \TabNewCol{0}
  \rTabPut{Bl}{.15}{.25}{$-\infty$}

  \TabNewCol{.25}
  \rTabPut{B}{0}{.25}{$-2\sqrt{3}$}
  \rTabPut[1]{B}{0}{.40}{}
  \rTabPut[2]{B}{0}{.40}{\TabZ}
  \rTabPut[2]{B}{0}{.40}{\TabZ}

  \TabNewCol{.5}
  \rTabPut{B}{0}{.25}{\TabZ}
  \rTabPut[2]{B}{0}{.40}{\TabZ}
  \rTabPut[1]{B}{0}{.40}{}
  \rTabPut[2]{B}{0}{.40}{\TabZ}

  \TabNewCol{.75}
  \rTabPut{B}{0}{.25}{$2\sqrt{3}$}
  \rTabPut[1]{B}{0}{.40}{}
  \rTabPut[2]{B}{0}{.40}{\TabZ}
  \rTabPut[2]{B}{0}{.40}{\TabZ}

  \TabNewCol{1}
  \rTabPut{Br}{-.1}{.25}{$+\infty$}
  
  \rput(.125,.5){$-$}\rput(.375,.5){$-$}\rput(.625,.5){$+$}\rput(.875,.5){$+$}
  \rput(.125,1.5){$+$}\rput(.375,1.5){$-$}\rput(.625,1.5){$-$}\rput(.875,1.5){$+$}
  \rput(.125,2.5){$-$}\rput(.375,2.5){$+$}\rput(.625,2.5){$-$}\rput(.875,2.5){$+$}
  
   \end{MonTableau}}\vfill
\end{minipage}
\end{enumerate}

\newpage

\begin{Example}
  {\setlength{\TabTitreL}{1cm}
  \begin{MonTableau}{1}{9}{1.5}

  \psframe[style=hachured,linestyle=none](.3,1)(.45,0)

  \TabNewCol{0}
  \rTabPut{Br}{-.15}{.25}{$x$}
  \rTabPut{Br}{-.15}{.40}{$f(x)$}

  \TabNewCol{0}
  \rTabPut{Bl}{.15}{.25}{$0$}
  \rTabPut{Bl}{.15}{.60}{$\frac{3}{2}$}

  \TabNewCol{.30}
  \rTabPut{B}{0}{.25}{$1$}
  \rTabPut{Br}{-.15}{.80}{$+\infty$}
  \psline[style=TabDblBarre](.3,0)(.3,1)

  \TabNewCol{.45}
  \rTabPut{B}{0}{.25}{$\frac{3}{2}$}
  \rTabPut[2]{B}{0}{.10}{\TabZ}

  \TabNewCol{1}
  \rTabPut{Br}{-.15}{.25}{$+\infty$}
  \rTabPut{Br}{-.15}{.40}{$1$}

  \TabFleche{B1}{C1}
  \TabFleche{D1}{E1}

  \end{MonTableau}}
\end{Example}

\newpage

\begin{center}
\begin{Example}
  \begin{MonTableau}{6}{12}{1.2}

  \TabNewCol{0}
  \rTabPut{B}{-.75}{.25}{$t$}
  \rTabPut{B}{-.75}{.20}{\TabTitre{Sgn.}{x'(t)}}
  \rTabPut{B}{-.75}{.20}{\TabTitre{Var.}{x}}
  \rTabPut{B}{-.75}{.20}{\TabTitre{Var.}{y}}
  \rTabPut{B}{-.75}{.20}{\TabTitre{Sgn.}{y'(t)}}
  \rTabPut{B}{-.75}{.40}{$\vec{T}$}
  \rTabPut{B}{-.75}{.40}{$m_T$}

  \TabNewCol{0}
  \rTabPut{B}{.5}{.25}{$0$}
  \rTabPut{B}{.5}{.40}{$1,5$}
  \rTabPut{B}{.5}{.40}{$2$}
  \rTabPut{B}{.5}{.15}{$0$}
  \rTabPut{B}{.5}{.40}{$1,5$}
  \rTabPut{B}{.5}{.40}{$\coordp{1,5}{1,5}$}
  \rTabPut{B}{.5}{.40}{$1$}

  % On recopie 4 fois cette dernière colonne et on ajuste
  \TabNewCol{.25}
  \rTabPut{B}{0}{.25}{$1$}
  \rTabPut{B}{0}{.40}{$0$}
  \rTabPut{B}{0}{.75}{$4$}
  \rTabPut{B}{0}{.60}{$4$}
  \rTabPut{B}{0}{.40}{$3$}
  \rTabPut{B}{0}{.40}{$\coordp{0}{3}$}
  \rTabPut{B}{0}{.40}{$\infty$}

  \TabNewCol{.5}
  \rTabPut{B}{0}{.25}{$2$}\rTabPut{B}{0}{.40}{$-1.5$}
  \rTabPut{B}{0}{.40}{$2$}\rTabPut{B}{0}{.75}{$6$}
  \rTabPut{B}{0}{.40}{$0$}\rTabPut{B}{0}{.40}{$\coordp{-1.5}{0}$}
  \rTabPut{B}{0}{.40}{$0$}
  
  \TabNewCol{.75}
  \rTabPut{B}{0}{.25}{$3$}\rTabPut{B}{0}{.40}{$0$}
  \rTabPut{B}{0}{.15}{$0$}\rTabPut{B}{0}{.60}{$4$}
  \rTabPut{B}{0}{.40}{$-2$}\rTabPut{B}{0}{.40}{$\coordp{0}{-2}$}
  \rTabPut{B}{0}{.40}{$\infty$}

  \TabNewCol{1}
  \rTabPut{B}{-.5}{.25}{$4$}\rTabPut{B}{-.5}{.40}{$1$}
  \rTabPut{B}{-.5}{.40}{$2$}\rTabPut{B}{-.5}{.15}{$0$}
  \rTabPut{B}{-.5}{.40}{$1,5$}\rTabPut{B}{-.5}{.40}{$\coordp{1}{-1}$}
  \rTabPut{B}{-.5}{.40}{$-1$}

  % les signes + et - on fait tout simplement
  \rput(.145,0.5){$+$}\rput(.145,3.5){$+$}
  \rput(.375,0.5){$-$}\rput(.375,3.5){$+$}
  \rput(.625,0.5){$-$}\rput(.625,3.5){$-$}
  \rput(.850,0.5){$+$}\rput(.850,3.5){$-$}

  % les flèches
  \TabFleche{B2}{C2}\TabFleche{C2}{D2}\TabFleche{D2}{E2}\TabFleche{E2}{F2}
  \TabFleche{B3}{C3}\TabFleche{C3}{D3}\TabFleche{D3}{E3}\TabFleche{E3}{F3}

  \TabTitreFerme\TabFerme
  \end{MonTableau}
\end{Example}
\end{center}


\end{document}