\documentclass[a4paper,12pt]{article} \usepackage{myXsim} \author{Benjamin Bertrand} \title{Information chiffrée 2- Cours} \date{2022-01-13} \pagestyle{empty} \begin{document} \maketitle \section*{Taux d'évolution successifs} \begin{propriete} Quand une quantité subit des \textbf{évolution successives} $t_1, t_2, ...$, elle subit alors une \textbf{évolution globale}. Les taux d'évolution \textbf{ne peuvent pas} s'ajouter. \bigskip Il faut multiplier les \textbf{coefficient multiplicateur} entre eux. \begin{center} \begin{tikzpicture}[ roundnode/.style={circle, draw=highlightbg, fill=green!5, very thick, minimum size=3mm}, node distance=2cm and 2cm, arrow/.style={->, shorten >=5pt, shorten <=5pt} ] %Nodes \node[roundnode] (termA) {\makebox[0.5cm]{}}; \node[roundnode] (termB) [right=of termA] {\makebox[0.5cm]{}}; \node[roundnode] (termC) [right=of termB] {\makebox[0.5cm]{}}; \node[roundnode] (termD) [right=of termC] {\makebox[0.5cm]{}}; \node (termE) [right=1cm of termD] {\makebox[0.5cm]{...}}; \node[roundnode] (termF) [right=1cm of termE] {\makebox[0.5cm]{}}; %Lines \path[arrow] (termA.north) edge [bend left=50] node [above] {$+t_1$} node [below] {$\times CM_1$} (termB.north) ; \path[arrow] (termB.north) edge [bend left=50] node [above] {$+t_2$} node [below] {$\times CM_2$} (termC.north) ; \path[arrow] (termC.north) edge [bend left=50] node [above] {$+t_3$} node [below] {$\times CM_3$} (termD.north) ; \path[arrow] (termA.south) edge [bend right=10] node [above] {Taux d'évolution global} node [below] {$\times CM_1 \times CM_2 \times CM_3 \times ...$} (termF.south); \end{tikzpicture} \end{center} \end{propriete} \paragraph{Exemples:} \begin{itemize} \item Une quantité a subit 5 augmentations de 10\%. \begin{center} \begin{tikzpicture}[ roundnode/.style={circle, draw=highlightbg, fill=green!5, very thick, minimum size=3mm}, arrow/.style={->, shorten >=5pt, shorten <=5pt} ] %Nodes \node[roundnode] (termA) {\makebox[0.5cm]{}}; \node[roundnode] (termB) [right=2cm of termA] {\makebox[0.5cm]{}}; \node[roundnode] (termC) [right=2cm of termB] {\makebox[0.5cm]{}}; \node[roundnode] (termD) [right=2cm of termC] {\makebox[0.5cm]{}}; \node[roundnode] (termE) [right=2cm of termD] {\makebox[0.5cm]{}}; \node[roundnode] (termF) [right=2cm of termE] {\makebox[0.5cm]{}}; %Lines \path[arrow] (termA.north) edge [bend left=50] node [above] {$+10\%$} node [below] {$\times ...$} (termB.north) ; \path[arrow] (termB.north) edge [bend left=50] node [above] {$+10\%$} node [below] {$\times ...$} (termC.north) ; \path[arrow] (termC.north) edge [bend left=50] node [above] {$+10\%$} node [below] {$\times ...$} (termD.north) ; \path[arrow] (termD.north) edge [bend left=50] node [above] {$+10\%$} node [below] {$\times ...$} (termE.north) ; \path[arrow] (termE.north) edge [bend left=50] node [above] {$+10\%$} node [below] {$\times ...$} (termF.north) ; \path[arrow] (termA.south) edge [bend right=10] node [above] {Taux d'évolution global} node [below] {$\times ... \times ... \times ... \times ... \times ... = \times ...$} (termF.south); \end{tikzpicture} \end{center} Le coefficient global est donc de $CM = ...$ On en déduit le \textbf{taux d'évolution global} $t = ...$ \item Une quantité a subit une augmentation de 5\% puis un diminution de 10\% et enfin une autre augmentation de 5\%. Calculons le taux d'évolution global. \end{itemize} \afaire{Compléter les exemples} \end{document}