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Strict Standards: date(): We selected 'UTC' for 'GMT/0.0/no DST' instead in /homepages/3/d170528928/htdocs/jm/bn/plugins/stats/stats.php on line 142

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Linenn - Jeux et Mathematiques - <br /> <b>Deprecated</b>: Non-static method plxUtils::strCheck() should not be called statically in <b>/homepages/3/d170528928/htdocs/jm/bn/core/lib/class.plx.show.php</b> on line <b>123</b><br /> linenn - Général


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Économie, Croissance et Progression géométrique

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Général | le
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vendredi 20 mai 2011


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Un taux de croissance annuel $t$ appliqué à une quantité initiale $A=A_0$ lui fera correspondre après un an la quantité $A_1= A\times (1+t)$, après deux ans la quantité $A_2= A\times (1+t)^2$ et plus généralement après $n$ années la quantité $B = A_n= A\times (1+t)^n$.

Il peut s'agir des variations des prix de marchandises, de biens immobiliers ou autres ou encore des salaires, lorsque la croissance est exponentielle et de $t$ par an, (cas d'une suite ou progression géométrique). Un taux négatif,  $t\leq 0$,  correspond à une décroissance.
Ce calcul s'applique aussi à un capital initial $A$ placé à un taux annuel $t$ dont les intérêts rapportés s'ajoutent tous les ans au capital.

Attention aux notations : $5\%$ est le nombre $0.05$ et l'écriture $0.05=5\%$ est correcte. Bien évidemment l'écriture, malheureusement très courante,  $0.05\times 100=5\%$ est incorrecte (cette seconde égalité est fausse). Autrement dit, le signe % correspond à une division par 100, par exemple $5\% = \frac{5}{100}$.

Lire : Économie, Croissance et Progression géométrique


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Deprecated: Non-static method plxUtils::strCheck() should not be called statically in /homepages/3/d170528928/htdocs/jm/bn/core/lib/class.plx.show.php on line 376
Un Prix du Millénaire pour Grigori Perelman

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mercredi 31 mars 2010


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Le Prix du Millénaire revient à Grigori Perelman pour sa résolution de la très difficile conjecture de Poincaré.

Lire : Un Prix du Millénaire pour Grigori Perelman


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Deprecated: Non-static method plxUtils::strCheck() should not be called statically in /homepages/3/d170528928/htdocs/jm/bn/core/lib/class.plx.show.php on line 376
Balance

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Général | le
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jeudi 04 mars 2010


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Sur un sujet qui rappelle le dilemme itéré du prisonnier
Un petit film réalisé par Christoph Lauenstein et Wolfgang Lauenstein d'une durée de 7 min. diffusé sur Arte. et que l'on peut voir durant plusieurs jours sur le site web.

balance

Lire : Balance


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Deprecated: Non-static method plxUtils::strCheck() should not be called statically in /homepages/3/d170528928/htdocs/jm/bn/core/lib/class.plx.show.php on line 376
Am Stram Gram

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Deprecated: Non-static method plxUtils::strCheck() should not be called statically in /homepages/3/d170528928/htdocs/jm/bn/core/lib/class.plx.show.php on line 448
Général | le
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mercredi 17 février 2010


Deprecated: Non-static method plxUtils::strCheck() should not be called statically in /homepages/3/d170528928/htdocs/jm/bn/core/lib/class.plx.show.php on line 476

SCIgen - An Automatic CS Paper Generator Essayez ce générateur automatique d'articles scientifiques.

Lire : Am Stram Gram


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