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Antonache Emanuel
Euclid
Posts: 37
Joined: Sat Feb 28, 2009 4:15 pm
Location: Targoviste, Dambovita

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Post by Antonache Emanuel »

Demonstrati ca daca \( a,b,c\in\mathbb[0,1] \), atunci:
\( \frac{a}{1+bc}+\frac{b}{1+ca}+\frac{c}{1+ab}+abc\le\frac{5}{2} \).
Vasile Pop, Cluj, Shortlist 2007
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Mateescu Constantin
Newton
Posts: 307
Joined: Tue Apr 21, 2009 8:17 am
Location: Pitesti

Post by Mateescu Constantin »

Vezi aici .
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