O inegalitate intr-un triunghi.

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Virgil Nicula
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Joined: Fri Sep 28, 2007 11:23 pm

O inegalitate intr-un triunghi.

Post by Virgil Nicula »

Sa se arate ca \( \underline{\overline{\left\|\ \sqrt{abc\left(a^3+b^3+c^3\right)}\ \le\ R\cdot (ab+bc+ca)\ \le\ 4R(R+r)^2\ \right\|}} \) si eventual sa se ofere o interpretare geometrica.
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