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luqing6879

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zaq123321

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This is obvious to me. I don't think we need proof any more.

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4Â¥2015-01-03 06:25:36
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zaq123321

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¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Yes. It's correct.
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2Â¥2015-01-03 03:10:58
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luqing6879

ľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by zaq123321 at 2015-01-03 03:10:58
Yes. It's correct.

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3Â¥2015-01-03 03:21:53
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nagami

ľ³æ (ÕýʽдÊÖ)

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¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Èç¹ûÄãµÄ½áÂÛÕýÈ·£¬ÄÇÈçϵÄÃüÌâÒ²Ó¦¸ÃÕýÈ·
c=a+b
min{c}=min{a}+min{b},ÒòΪmin{b}=max{-b}
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min{c}<=min{a}+min{b}
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a=£¨x-1£©^2,b=x^2
min{a}=0,min{b}=0,
a+b>=2*sqrt(a*b)=2|x-1|*|x|
min{c}=1/2
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5Â¥2015-01-03 10:09:14
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