Compétence Précédent

Compétence Suivante

Comment encadrer un produit ou une fraction ?

L’ordre dans IR Comment encadrer un produit ou une fraction ?

Niveau de cet exercice :

Énoncé

et deux réels.

Encadrer et dans les deux cas ci-dessous :

et
et

Correction

1-

on a et

alors

donc

On a alors et

alors

donc

2-

on a alors

et

alors

alors

donc

On a alors alors

et

alors

alors

donc

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