\begin{exercice}[Tableaux incorrects]
Les tableaux de variations suivants comportent des \\erreurs. Lesquelles? Justifier.
\begin{center}
\begin{tikzpicture}[general, scale=0.8]
\tkzTabInit[lgt=1.3,espcl=2.46, color, colorC=H4, colorV=H4, colorL=H4, colorT=A4, lw=0.3mm]{ $x$ / 1, $f(x)$ / 2}
{ $-10$ , $-2$ , $0$ , $7{,}5$}
\tkzTabVar{ -/  , +/ $2$ , -/ $\dfrac{10}{3}$ , +/ $8$}
\end{tikzpicture}
\end{center} 
\begin{center}
\begin{tikzpicture}[general, scale=0.8]
\tkzTabInit[lgt=1.3,espcl=7.4, color, colorC=H4, colorV=H4, colorL=H4, colorT=A4, lw=0.3mm]{ $x$ / 1, $g(x)$ / 2}
{ $-10$ , $2$}
\tkzTabVar{ -/7 , +/ $9$ }
\tkzTabVal[draw]{1}{2}{0.5}{$-5$}{$-6$}
\end{tikzpicture}
\end{center}
\end{exercice}
