functie din gazeta

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mihai++
Bernoulli
Posts: 206
Joined: Wed Nov 28, 2007 8:08 pm
Location: Focsani

functie din gazeta

Post by mihai++ »

Sa se determine toate functiile \( f: (0,\infty)\to(0,\infty) \), care satisfac relatia:
\( f(xy+f(x))=\frac{1}{2}((f(x)+f(y)),\forall x,y\in(0,\infty) \).
n-ar fi rau sa fie bine :)
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