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Re: [obm-l] Desigualdades do rearranjo!!!

To: <obm-l@xxxxxxxxxxxxxx>
Subject: Re: [obm-l] Desigualdades do rearranjo!!!
From: "Ricardo" <ricardo_paixao_santos@xxxxxxxxxxxx>
Date: Fri, 21 Jul 2006 20:06:06 -0300
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O item 1 é facil:

Decorre de (x-y)^2 + (x-z)^2 + (z-x)^2>=0

Abcos

Ricardo

----- Original Message -----

From: diego andres

To: obm-l@mat.puc-rio.br

Sent: Friday, July 21, 2006 3:38 PM

Subject: [obm-l] Desigualdades do rearranjo!!!

Demonstre que:
1)x²+y²+x² >= xy+yz+zx
2)x³+y³+x³ >= x²y+y²z+z²x
.....
eu nao consigo mostrar porque o rearranjo ,nesse caso, fuciona !!!!

grato:Diego Andrés

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