Tableau de variations, de signe et concavité avec Tkz-Tab package 2
📅 November 15, 2025 | 👁️ Views: 1
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This PDF covers latex course for figures students. Designed to help you master the topic efficiently.
\documentclass[12pt]{article}
\usepackage[left=1cm,right=1cm,top=1cm,bottom=1cm]{geometry}
\usepackage{tkz-tab}
\usepackage{amsmath}
\usepackage{xcolor}
\usetikzlibrary{calc}
\begin{document}
%================ Sign Table =================%
\begin{center}
\begin{tikzpicture}
\tkzTabInit[lgt=2,espcl=2]%
{$x$ /1 , $f(x)$ /1}%
{$-\infty$, $-1$, $2$, $+\infty$}
\tkzTabLine{ , + , z , - , z , + , }
\end{tikzpicture}
\end{center}
\begin{center}
\begin{tikzpicture}
\tkzTabInit[lgt=3,espcl=2.5]%
{$x$ /1 , $x^2 + 3x - 4$ /1}%
{$-\infty$, $-4$, $1$, $+\infty$}%
\tkzTabLine{ , + , z , - , z , + , }
\end{tikzpicture}
\end{center}
\begin{center}
\begin{tikzpicture}
\tikzset{h style/.style = {pattern = north west lines,
pattern color = red!30}}
\tkzTabInit[lgt=4,espcl=3.5]
{$x$ / 1 , $f'(x)$ / 1, $f(x)=\sqrt{\dfrac{x-1}{x+1}}$ / 2 }
{$-\infty$, $-1$, $1$, $+\infty$}
\tkzTabLine
{ , + , d , h , d, +, }
\tkzTabVar
{ -/1 , +DH/$+\infty$, -C/0, +/1}
\end{tikzpicture}
\end{center}
%================ Variation Table =================%
\begin{center}
\begin{tikzpicture}
\tkzTabInit[lgt=2.5,espcl=2.5]%
{$x$ /1 , $f'(x)$ /1 , $f(x)$ /2}%
{$-\infty$, $-1$, $1$, $+\infty$}
\tkzTabLine{ , + , z , - , z , + , }
\tkzTabVar{
-/ $+\infty$ ,
+/ {\textcolor{red}{$-2$}} ,
-/ {\textcolor{blue}{$2$}} ,
+/ $+\infty$
}
\end{tikzpicture}
\end{center}
%================ Concavity Table =================%
\begin{center}
\begin{tikzpicture}
\node[align=left] at (4,1.5) {Concavité avec tikz, n'est pas supportée en tkz-tab};
\node[align=left] at (2.5,1) {à utiliser jusqu'à trouver mieu};
\tkzTabInit{$x$ /1, $f''$ /1,$f'$ /2, $C_f$ /2}{$-\infty$ , $1$ ,$+\infty$}
\tkzTabLine{, - , z , + ,}
\tkzTabVar{+/$+\infty$ , -/$-2$ , +/$+\infty$}
\begin{scope}[line width=1pt]
% le point N14 est définie dans le packet tkz-tab
% on décine des courbes avec la command "to"
% [out=90,in=180] : le debut de la courbe à un angle 90
% vers la droite et fini avec un angle horizontal (sommet de la courbe) à 180
% à une hauter de 1.9 (ajouté à y)
% puis en descend, le début 0 degré et la fin 90 degrés
\draw[red] ($(N14)+(-0.2,0.2)$) to [out=90,in=180] ($(N14)+(1,1.9)$)
to [out=0,in=90] ($(M14)+(0.7,0.2)$) coordinate (A);
\draw ($(A)+(0.2,0)$) -- ++(0.7,1.7) coordinate (B) -- ++(1,-1.7);
% debut -90 degrés, fin 180 horizontal en bas.
\draw[blue] ($(B)+(1,-0.2)$) to [out=-90,in=180] ($(B)+(2,-1.7)$)
to [out=0,in=-90] ($(B)+(3,-0.2)$) coordinate (C);
\node[below, text width=2cm, align=center, font=\tiny\bf] at ($(B)+(0.2,-1)$) {
point \\d'inflexion
};
\end{scope}
\end{tikzpicture}
\end{center}
\end{document}
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Frequently Asked Questions
What will I learn by the end of this course?
You will gain a solid understanding of Tableau de variations, de signe et concavité avec Tkz-Tab package and be able to apply it in exams and real‑world problems.
What topics are covered in this course?
The course "Tableau de variations, de signe et concavité avec Tkz-Tab package" covers key concepts of latex for figures. Designed to help students master the curriculum.
Is this course suitable for beginners?
Yes, the material is structured to be accessible while providing depth for advanced learners.
Are there exercises or practice problems?
Exercises are included to help you practice.
Does this course include solutions?
Solutions are available separately.
Download latex Course PDF (figures)
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