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Posted: **Mon Jun 22, 2009 5:47 pm**

Fie \( a,b,c>0 \). Sa se arate ca are loc inegalitatea
\( \frac{\sum_{cyc}ab}{\sum_{cyc}a}\geq \sqrt[3]{abc} \)

Posted: **Mon Jun 22, 2009 6:23 pm**

Vezi a=b=1 si c=8.

Inegalitate