On a représenté graphiquement ci-dessous 4 fonctions définies sur \([0;+\infty[\).
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Représentation des courbes \( \mathscr{C_1} \), \( \mathscr{C_2} \), \( \mathscr{C_3} \), \( \mathscr{C_4} \)
Relier chaque courbe à l'expression de la fonction qu'elle représente.