Environnement tikz

\documentclass[11pt,dvips]{article} 
\usepackage{hyperref}
%\usepackage[cp1252]{inputenc}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[top=2cm,bottom=2cm,left=1cm,%
right=1cm]{geometry}
\usepackage{graphicx}
\usepackage{pstricks,pst-plot,pst-eucl} 
\usepackage{framed}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{ulem}
\usepackage{mathrsfs}
\usepackage{fancybox}
\usepackage{multicol}
\usepackage{xcolor}
\usepackage{epsfig}
\usepackage{pifont}
\usepackage[framed]{ntheorem}
\usepackage[frenchb]{babel}
\usepackage{tabularx}
\usepackage{fancyhdr}
\usepackage{fp}

\usepackage{pstricks-add}
\usepackage{lipsum,enumitem}

\def\R{{\mathbb R}}
%\def\Q{{\mathbb Q}}
\def\Z{{\mathbb Z}}
%\def\D{{\mathbb D}}
\def\N{{\mathbb N}}
%\def\C{{\mathbb C}}

\newcommand{\encad}[1]{%
	\fbox{\begin{minipage}[t]{1\linewidth}%
			#1\end{minipage}}}
\setlength{\theorempreskipamount}{0pt}
\setlength{\theorempostskipamount}{0pt}
\theoremstyle{break}
\theorembodyfont{\upshape}
\newframedtheorem{Th}{Th\'eor\`eme}
\newframedtheorem{Prop}{Propri\'et\'e}
\newtheorem{Rem}{Remarque}
\newtheorem{Not}{Notation}
\newtheorem*{Dem}{D\'emonstration}
%\theorembodyfont{\rmfamily}
%\newtheorem{Exo}{EXERCICE \no{}}
%\theorembodyfont{\small \sffamily}
\newtheorem{Ex}{Exemple}
\newtheorem{rem}{Remarque}
\theorembodyfont{\slshape}
\newframedtheorem{Def}{D\'efinition}

\renewcommand\thesection{\Roman{section}}
\renewcommand\FrenchLabelItem{\textbullet}
\newcommand{\V}{\overrightarrow}
\renewcommand\thesection{\Roman{section}}
\renewcommand{\thesubsection}{\quad \arabic{subsection})}
\renewcommand{\thesubsubsection}{\qquad \alph{subsubsection})}
\renewcommand\FrenchLabelItem{\textbullet}

\setlength\parindent{0pt}      % Pour éviter l'indentation en début de paragraphe
\newcommand{\cRM}[1]{\MakeUppercase{\romannumeral #1}} % chiffre romain

\usepackage{algorithm} 
\usepackage{algorithmic}
\usepackage{eurosym}
\usepackage{tikz,tkz-tab}

\begin{document}
\begin{tikzpicture}
\tkzTabInit{$x$ / 1 , $f(x)$ / 1}{$0$, $6$, $+\infty$}
\end{tikzpicture}
\end{document}