Cho a, b,c >0, thỏa mãn abc=1. Chứng minh \sum \frac{1}{a^{2016}+b^{2016}+1}\leq 1
Cho a, b,c >0, thỏa mãn abc=1. Chứng minh \sum \frac{1}{a^{2016}+b^{2016}+1}\leq 1
Started By phuonganh2003, 09-10-2016 - 08:52
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