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Composition de Mathématiques du 1e semestre

Posted by mbeugue on Tuesday, 2 June 2026

Exercice 1

1. Résoudre dans $\mathbb{R}$ l’équation suivante : $\sqrt{2x + 1} = x + 1$

2· Résoudre dans $R^{3}$ le système suivant :
$$\left\lbrace\begin{array}{rcl}:
x + y + z &=& −19\\
16x − 8y − 2z &=& −58\\
x − y − z &=& 11
\end{array}\right.$$