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Ho Chi Minh City, Vietnam
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Asymptotics of $1^n + 2^{n-1} + 3^{n-2} +\cdots + (n-1)^2 + n^1$
asymptotics
asked Nov 1 '11 at 8:51
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6
How can I prove the inequality $\frac{1}{x} + \frac{1}{y} + \frac{1}{z} \geq \frac{9}{x+y+z}$?
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