Feat(2nd): premières pierres pour un chapitre reporté
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2nd/09_Racine_carre/1B_definition.pdf
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2nd/09_Racine_carre/1B_definition.pdf
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2nd/09_Racine_carre/1B_definition.tex
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2nd/09_Racine_carre/1B_definition.tex
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\documentclass[a4paper,10pt]{article}
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\usepackage{myXsim}
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\author{Benjamin Bertrand}
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\title{Racine carre - Cours}
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\date{janvier 2023}
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\pagestyle{empty}
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\begin{document}
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\maketitle
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\begin{definition}[La racine carré]
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La \textbf{racine carré d'une nombre $a$}, noté $\sqrt{a}$, est le nombre \textbf{positif} qui mis au carré est égal à $a$. C'est à dire
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\[
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\sqrt{a} \geq 0 \qquad \qquad (\sqrt{a})^2 = a
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\]
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\end{definition}
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\paragraph{Exemples:}
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\begin{multicols}{2}
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\begin{itemize}
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\item $\sqrt{4} = ...... $ car \dotfill
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\item $\sqrt{25} = ...... $ car \dotfill
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\item $\sqrt{1,6} = ...... $ car \dotfill
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\item $\sqrt{4.41} = ...... $ car \dotfill
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\item $\sqrt{2} = ...... $ car \dotfill
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\end{itemize}
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\end{multicols}
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\paragraph{Remarque:} On ne peut pas prendre la racine carrée d'un nombre négatif, car \dotfill
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\bigskip
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\begin{propriete}[ Multiplication ou division ]
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Règles de calculs pour la multiplication. Soit $a$ et $b$ deux nombres positifs.
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\[
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\sqrt{a}\times\sqrt{b} = \sqrt{a\times b}
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\qquad \qquad
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a\sqrt{b} = \sqrt{a^2\times b}
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\qquad \qquad
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\frac{\sqrt{a}}{\sqrt{b}} = \sqrt{\frac{a}{b}}
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\]
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\end{propriete}
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\begin{multicols}{2}
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\paragraph{Exemples:}~\\
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\noindent
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Multplications
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\begin{itemize}
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\item $\sqrt{32}\times\sqrt{2} = $
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\item $\sqrt{27}\times\sqrt{3} = $
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\item $\sqrt{3}\times\sqrt{36}\times\sqrt{3} = $
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\item $\left( 6\sqrt{3} \right) = $
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\end{itemize}
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Mise sous la forme $a\sqrt{b}$ (avec $b$ le plus petit possible)
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\begin{itemize}
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\item $\sqrt{72}=$
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\item $\sqrt{45} = $
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\item $3\sqrt{125} = $
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\end{itemize}
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\columnbreak
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Démonstration de la formule $\sqrt{a}\times\sqrt{b} = \sqrt{a\times b}$
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\end{multicols}
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\begin{propriete}[ Somme ]
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Soit $a$ et $b$ deux nombres positifs \textbf{non nuls}.
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\[
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\sqrt{a+b} < \sqrt{a}+ \sqrt{b}
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\]
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\end{propriete}
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\paragraph{Méthode pour additionner des racines carrés}~
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\begin{multicols}{2}
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\begin{itemize}
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\item Écrire le nombre suivant sous la forme $a\sqrt{b}$
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\[
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A = 7\sqrt{5} + 9\sqrt{5}
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\]
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\item Écrire le nombre suivant sous la forme $a\sqrt{b}$
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\[
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B = 2\sqrt{147} + 5\sqrt{12} - 3\sqrt{27}
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\]
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\end{itemize}
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\end{multicols}
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\end{document}
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2nd/09_Racine_carre/exercises.tex
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2nd/09_Racine_carre/exercises.tex
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\begin{exercise}[subtitle={Simplification}, step={1}, origin={???}, topics={ Racine carre }, tags={ Racine carre }]
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Simplifier les valeurs suivantes sans calculatrices
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\begin{multicols}{4}
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\begin{enumerate}
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\item $\sqrt{25}$
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\item $\sqrt{7^2}$
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\item $(\sqrt{14})^2$
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\item
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\end{enumerate}
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\end{multicols}
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\end{exercise}
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\begin{solution}
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<++>
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\end{solution}
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2nd/09_Racine_carre/index.rst
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2nd/09_Racine_carre/index.rst
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Racine carre
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############
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:date: 2023-01-12
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:modified: 2023-01-12
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:authors: Benjamin Bertrand
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:tags: Racine carre
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:category: 2nd
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:summary: Exercices techniques autour de la racine carré
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Éléments du programme
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=====================
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Contenus
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--------
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Capacités attendues
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-------------------
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Commentaires
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------------
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Progression
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===========
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Étape 1:
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--------
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2nd/09_Racine_carre/plan_de_travail.tex
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2nd/09_Racine_carre/plan_de_travail.tex
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\documentclass[a4paper,12pt]{article}
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\usepackage{myXsim}
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\author{Benjamin Bertrand}
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\title{Racine carre - Plan de travail}
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\tribe{2nd}
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\date{janvier 2023}
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\pagestyle{empty}
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\DeclareExerciseCollection{banque}
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\xsimsetup{
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}
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\begin{document}
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\maketitle
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% Résumé
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\bigskip
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Savoir-faire de la séquence
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\begin{itemize}
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\item
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\end{itemize}
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\bigskip
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Ordre des étapes à respecter
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\section{}
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\listsectionexercises
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\pagebreak
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\input{exercises.tex}
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\printcollection{banque}
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\end{document}
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2nd/09_Racine_carre/solutions.tex
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2nd/09_Racine_carre/solutions.tex
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\documentclass[a4paper,10pt]{article}
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\usepackage{myXsim}
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\usetikzlibrary{shapes.geometric}
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\author{Benjamin Bertrand}
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\title{Racine carre - Solutions}
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\tribe{2nd}
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\date{janvier 2023}
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\DeclareExerciseCollection{banque}
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\xsimsetup{
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exercise/print=false,
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solution/print=true,
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}
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\pagestyle{empty}
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\begin{document}
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\maketitle
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\input{exercises.tex}
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%\printcollection{banque}
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%\printsolutions{exercises}
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\end{document}
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