Chứng minh rằng nếu $a<b$ thì $a^{3}-3a\leq b^{3}-3b+4$
Chứng minh rằng nếu $a<b$ thì $a^{3}-3a\leq b^{3}-3b+4$
Started By dcd000, 04-04-2015 - 20:28
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