\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[upright]{fourier}
\usepackage[dvipsnames]{xcolor}
\usepackage{tkz-tab}
\usepackage{amsmath}
\title{Bảng biến thiên 1}
\usepackage{pagecolor}
\parindent=0pt
\pagestyle{empty}
\usepackage[paperwidth=12.7cm,paperheight=3.9125cm,
top=-0.1cm,bottom=-0.4cm,left=-0.2cm,right=-0.2cm]{geometry}
\begin{document}
\newpagecolor{yellow}
\begin{tikzpicture}
\tkzTabInit[lgt=3]%
{$t$/1,%
$f’(t)$ /1,%
$f(t)$ /2}%
{$-\infty$ , $-\dfrac{2}{3}$ , $\dfrac{1}{3}$ , $+\infty$}%
\tkzTabLine{ ,-, 0 ,+, 0 ,-, }
\tkzTabVar %
{
+/$0$,-/$-6$ ,+/$3$,-/$0$
}
\end{tikzpicture}
\end{document}
