EXO R - EF 1 [Proposed]


  • Math&Maroc

    Trouver toutes les fonctions f:RR f: \mathbb{R} \to \mathbb{R} tels que :
    (x,yR):f(x+y2)(y+1)f(x).(\forall x,y \in \mathbb{R} ) : f(x+y^2) \geq (y+1)f(x).


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