Functii reale
Posted: Wed Dec 16, 2009 7:34 pm
Determinati toate functiile \( f:\mathbb{R}\rightarrow\mathbb{R} \) care verifica relatia:
\( f(x+y)\le f(xy) , (\forall)x,y\in \mathbb{R} \)
\( f(x+y)\le f(xy) , (\forall)x,y\in \mathbb{R} \)