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2Â¥: Originally posted by tigou at 2015-08-10 23:05:15
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\lim_{x\to+\infty}f(x)x^{1-f(x)}=+\infty\Leftrightarrow\lim_{x\to+\infty}f(x)x=+\infty\lan\lim_{x\to+\infty}\ln x=+\infty


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