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OpenStudy (anonymous):
show that x + y + z >= (xy)^1\2 + (xz)^1\2 + (yz)^1\2. Please help.
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ganeshie8 (ganeshie8):
familiar with AM-GM inequality ?
OpenStudy (anonymous):
you mean arithmetic and geometric? yes but i can't show this
OpenStudy (anonymous):
(x+ y)\2 >= (xy)^1\2 then likewise then what?
ganeshie8 (ganeshie8):
yes, repeat them for y+z, and z+x add them all
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