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2Â¥2014-07-20 17:43:08
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2Â¥: Originally posted by jabile at 2014-07-20 17:43:08
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EX=-\int_0^{\infty} x d\bar{F}(x)=x\bar{F}(x)|_0^{\infty}+\int_0^{\infty} \bar{F}(x)dx
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a\bar{F}(a)\leq \int_a^{\infty} xdF(x)\rightarrow 0~~( a\rightarrow \infty)...

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3Â¥2014-07-20 18:41:31
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3Â¥: Originally posted by yy_nju at 2014-07-20 18:41:31
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4Â¥: Originally posted by jabile at 2014-07-20 19:13:17
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a\bar{F}(a)=\int_a^{\infty} a dF(x)...

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