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u cExpand (cExpnd)
Fonction: Développe la racine X
e
du nombre imaginaire.
Syntaxe: cExpand( {Exp/Eq/Ineq/List/Mat/Vect} [ ) ]
Exemple Développer 2i
1(TRNS)v(cExpnd)!x( )c!a(i)w 1 + i
u approx
Fonction: Produit une approximation numérique pour une expression
Syntaxe: approx( {Exp/Eq/Ineq/List/Mat/Vect} [ ) ]
Exemple Obtenir une valeur numérique pour 2
1(TRNS)l(approx)!x( )cw 1.414213562
Exemple 9
20
Normal:jMcaw 12157665459056928801
approx: 1(TRNS)l(approx)jMcaw1. 215766546E+19 (Affichage: Norm1)
7-1-15
Utilisation du mode CAS (Système d’algèbre informatique)
# A propos d’approx
Avec les calculs ordinaires, (lorsque approx
n’est pas utilisé) dans le mode CAS, les
résultats des calculs sont entièrement
affichés, sans exposants. Par contre, lorsque
vous utilisez approx dans le mode CAS, les
résultats sont affichés en fonction de la plage
exponentielle définie dans le paramètre Display de
l’écran de configuration.
C’est-à-dire que dans le mode CAS, approx affiche
les résultats tels qu’ils sont affichés dans le mode
RUN
MAT.
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