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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
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