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\documentclass{article}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{amsmath}
\usepackage{tkz-tab}
\parindent=0pt
\begin{document}
\begin{tikzpicture}
\tikzset{double style/.style = {double,double distance=1pt}}
\tkzTabInit[lgt=2,espcl=1]
{$x$ /1,
$x^2-3x+2$ /1,
$\ln (x^2-1)$ /1,
$E(x)$ /1}%
{$-\infty$ ,$-\sqrt{2}$, $-1$ , $1$ ,$\sqrt{2}$ , $2$ , $+\infty$}%
\tkzTabLine{ , + , t , + , t , + , z , - , t , - , z , + , }
\tkzTabLine{ , + , z , - , d , h , d , - , z , + , t , + , }
\tkzTabLine{ , + , z , - , d , h , d , + ,z , - , z , + , }
\end{tikzpicture}
\end{document}
% latin1
% pdflatex
% Alain Matthes
|