2

I tried to draw table of variant. I tried

\documentclass[12pt]{article}
\usepackage{tkz-tab}
\tikzset{t style/.style = {style = densely dashed}}
\begin{document}
\begin{center}
\begin{tikzpicture}
\tkzTabInit[espcl=3]%
{$x$/1,$f'(x)$/1, $f(x)$/3}{$-\infty$,$1$,$+\infty$}%
\tkzTabLine{, +,z,+,}
\tkzTabVar{-/ $-\infty$, R/ , +/$+\infty$ }
\tkzTabImaFrom{1}{3}{N21}{$3$}
\end{tikzpicture}
\end{center}
\end{document}

I got

enter image description here

How to draw like this picture?

enter image description here

2

Here a solution without \tkzTabImaFrom

\documentclass[12pt]{article}
\usepackage{tkz-tab}
\tikzset{t style/.style = {style = densely dashed}}
\begin{document}
\begin{center}
\begin{tikzpicture}
\tkzTabInit[espcl=3]%
{$x$/1,$f'(x)$/1, $f(x)$/3}{$-\infty$,$1$,$+\infty$}%
\tkzTabLine{, +,z,+,}
\tkzTabVar{-/ $-\infty$, R/ , +/$+\infty$ }
\path (FR12) -- (FL32)node[midway,fill=white](M){$3$};
\draw[arrow style,shorten >=-2pt](FR12)--(M);
\end{tikzpicture}
\end{center}
\end{document}

enter image description here

  • Can you repair style of arrow at left of number 3? – minhthien_2016 Jul 16 '17 at 16:12
  • Answer updated. – Salim Bou Jul 16 '17 at 16:55

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