Tot o inegalitate

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alex2008
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Tot o inegalitate

Post by alex2008 »

Fie \( a,b,c>0 \) astfel incat \( a+b+c=1 \) . Sa se demonstreze inegalitatea :

\( a^3+b^3+c^3+6abc\le a^2+b^2+c^2 \)

Dan Marinache
. A snake that slithers on the ground can only dream of flying through the air.
Marius Mainea
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Post by Marius Mainea »

\( LHS\le(a^2+b^2+c^2)(a+b+c) \)
alex2008
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Post by alex2008 »

Cu aceeiasi conditie sa se demonstreze ca :

\( ab+bc+ca\le a^3+b^3+c^3+6abc\le a^2+b^2+c^2\le 2(a^3+b^3+c^3)+3abc \)
. A snake that slithers on the ground can only dream of flying through the air.
Marius Mainea
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Post by Marius Mainea »

Prima si ultima sunt echivalente cu inegalitatea lui Schur
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