May Greene
09/13/2024 · Elementary School
L WRCICE 8 On considere la fonctions h définie de \( \mathbb{R} \) vers \( \mathbb{R} \) par: \( h(x)=\frac{x-9}{\sqrt{x-5-2}} \) et la fonctio \( u \) définie de \( \mathbb{R} \) vers \( \mathbb{R} \) par: \( : u(x)=\sqrt{x-5}+2 \). 1) Détermine les ensembles de définition de h et \( u \). 2) Démontre que u est un prolongement de h à \( [5 ;+\infty[ \).
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1) L'ensemble de définition de \( h \) est \( ]7; +\infty[ \) et de \( u \) est \( [5; +\infty[ \).
2) \( u \) est un prolongement de \( h \) à \( [5; +\infty[ \) car \( u(x) = h(x) \) pour \( x > 7 \).
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