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ÒÑÖªab+bc+ac=1,Ö¤Ã÷²»µÈʽÇÐa,b,c¾ù´óÓÚµÈÓÚ0£¬ÇóÖ¤1/(a+b)+1/(b+c)+1/(a+c)´óÓÚµÈÓÚ2.5.
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Apparently when a=b=1, c=0, the inequality takes value 2.5, which suggests that a,b,c are not symmetric in the problem.


6Â¥2012-05-13 22:23:29
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Jackie2011

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2Â¥2012-05-13 20:46:39
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2Â¥: Originally posted by Jackie2011 at 2012-05-13 20:46:39:
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3Â¥2012-05-13 21:24:33
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2Â¥: Originally posted by Jackie2011 at 2012-05-13 20:46:39:
ͨ·ÖºóÀûÓÃÌõ¼þ,»¯³Éa+b+cµÄ¶þ´Î·½³Ì,ÔÙÓÃÅб𷨿ÉÖ¤!

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4Â¥2012-05-13 21:51:19
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