[數學]證明
由 Raceleader 於 星期二 六月 24, 2003 11:16 pm
method from siuhochung
WLOG, let a>=b>=c, then A<=B<=C
k^2
=(a+b+c+A+B+C)^2/9
>=4(a+b+c)(A+B+C)/9
>(a+b+c)(A+B+C)/3
>=L.H.S.
chebyshev
WLOG, let a>=b>=c, then A<=B<=C
k^2
=(a+b+c+A+B+C)^2/9
>=4(a+b+c)(A+B+C)/9
>(a+b+c)(A+B+C)/3
>=L.H.S.
chebyshev
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Raceleader - 訪客