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\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 66 (Section 14.7.1 : Tableau de variations)

  \begin{tikzpicture}
  \tkzTab%
  { $v$      /1,%
    $g'(v)$  /1,%
    $g(v)$   /3%
  }%
  { $b$ ,%
    $3b$ ,%
    $+\infty$%
  }%
  {0,$+$,$0$,$-$,t}
  {-/           $0$    /,%
   +/$\dfrac{8}{27b}$  /,%
   -/  $0$             /}%
\end{tikzpicture}

\end{document}