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Inegalitate G.M.2/2008

Posted: Sun May 11, 2008 1:07 pm
by BogdanCNFB
Sa se arate ca in orice triunghi ABC are loc inegalitatea:
\( m_{a} \cdot m_{b} \cdot m_{c}\leq\frac{1}{36}\cdot(5p^{2}-3r^{2}-12Rr)\cdot sqrt{4p^{2}-3r^{2}-12Rr}. \)

Posted: Tue May 13, 2008 5:13 pm
by BogdanCNFB
Poate va ajuta faptul ca \( p^2\ge 3r^2+12Rr \).