RACINE CARRÉE

Tablette d’argile YBC7289 - crédits : © Courtesy of Yale University — Tablette d’argile YBC7289
© Courtesy of Yale University

La racine carrée d’un nombre strictement positif a est le nombre positif, noté $\sqrt{a}$ , qui, élevé au carré, donne a :

${(\sqrt{a})}^{2} = a$

La racine carrée d’un nombre au carré, est égale à ce nombre :

$\sqrt{a^{2}} = a$

La racine carrée d’un nombre négatif n’existe pas : $\sqrt{- a [...]La suite de cet article est accessible aux abonnés Des contenus variés, complets et fiables Accessible sur tous les écrans Pas de publicité Découvrez nos offres Déjà abonné ? Se connecterCarte mentale Élargissez votre recherche dans UniversalisClassification Mathématiques Nombres et calculsPour citer cet article Formats de citation AFNOR APA (7 ème version) Chicago Style MLA Encyclopædia Universalis. RACINE CARRÉE [en ligne].
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média La puissance n-ième d’un nombre a est : (a est multiplié par lui-même n fois, on a donc n facteurs). an se dit « a puissance n » ou « a exposant n ».L’exposant n est un nombre entier non nul.Un nombre à l’exposant 1 ne change pas le nombre :Un nombre à l’exposant 0 est toujours [...]Mathématiques Nombres et calculs mathématiques racine carrée calcul, mathématiques arithmétique et théorie des nombres Tout afficherRejoignez-nous Inscrivez-vous à notre newsletter S'inscrireAccédez à l'intégralité d'Universalis Junior sans publicitéEncyclopædia Universalis Contact Mentions légales et politique de confidentialité CGV RGPD © 2024 Encyclopædia Universalis France. Tous droits de propriété industrielle et intellectuelle réservés.// noinspection ES6ConvertVarToLetConst,JSUnusedGlobalSymbols
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