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Ecuatie functionala 2

Posted: Fri Feb 19, 2010 9:49 am
by Marius Mainea
Sa se determine toate functiile \( f: (0,\infty)\rightarrow (0,\infty) \) , care satisfac relatia:\( f(xy+f(x))=\frac{1}{2}(f(x)+f(y)) ,(\forall)x,y\in(0,\infty) \)

GM