Thread: inequality with three vars
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Old September 4th, 2008, 10:04 AM
ballrideball ballrideball is offline
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Default inequality with three vars
Prove that:
3(-2zy+z^{4/3}y^{2/3}+y^{4/3}z^{2/3})+4(z-x)^2+4(x-y)^2+(y-z)^2\geq0
for all x,y,z\in R_{+}
It's very hard task and I can't get through it.

[I've corrected it, there was a mistake]
Last edited by ballrideball; September 4th, 2008 at 01:32 PM. Reason: mistake
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