OLM Bihor 2006

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alex2008
Leibniz
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OLM Bihor 2006

Post by alex2008 »

Aratati ca daca \( a,\ b,\ c\in \mathb{R} \) si \( a+b+c=6 \), atunci \( a^2+b^2+c^2\ge 12 \).

Petrisor Neagoe, Etapa locala, Bihor 2006
. A snake that slithers on the ground can only dream of flying through the air.
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mihai++
Bernoulli
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Joined: Wed Nov 28, 2007 8:08 pm
Location: Focsani

Post by mihai++ »

\( \sum a^2\geq\frac{(a+b+c)^2}{3}=12. \)
n-ar fi rau sa fie bine :)
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