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+\documentclass{article}
+\usepackage[latin1]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{lmodern}
+\usepackage{amsmath}
+\usepackage{tkz-tab}
+
+\newcommand*{\va}{\colorbox{red!50} {$\scriptscriptstyle V_a$}}
+\newcommand*{\vb}{\colorbox{blue!50} {$\scriptscriptstyle V_b$}}
+\newcommand*{\vbo}{\colorbox{blue!50} {$\scriptscriptstyle V_{b1}$}}
+\newcommand*{\vbt}{\colorbox{yellow!50}{$\scriptscriptstyle V_{b2}$}}
+\newcommand*{\vc}{\colorbox{gray!50} {$\scriptscriptstyle V_c$}}
+\newcommand*{\vd}{\colorbox{magenta!50}{$\scriptscriptstyle V_d$}}
+\newcommand*{\ve}{\colorbox{orange!50} {$\scriptscriptstyle V_e$}}
+
+\parindent=0pt
+\begin{document}
+
+\begin{tikzpicture}
+ \tkzTabInit[lgt=3,espcl=5]{ $x$/1,$f''(x)$/1,$f'$/3,$f$/3 }%
+ { $a$ , $d$ ,$e$}
+ \tkzTabLine{ z,+ ,z,- ,z }
+ \tkzTabVar {-/\va ,+/\vd , -/ \ve}
+ \tkzTabVal[draw,remember=vb]{1}{2}{0.333}{b}{$1$}
+ \tkzTabVal[draw,remember=vc]{1}{2}{0.666}{c}{$2$}
+ \tkzTabVar{-/$-\infty$ ,R/ , +/ $+\infty$}
+ \tkzTabVal[draw]{1}{3}{0.5}{}{$0$}
+ \draw[opacity=0.5,fill=red!40] (vb) circle(3ex);
+ \draw[opacity=0.5,fill=blue!40] (vc) circle(3ex);
+\end{tikzpicture}
+\end{document}
+
+% latin1
+% pdflatex
+% Alain Matthes \ No newline at end of file