5641| 11
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[不等式] √2a,b,c成等差,求3/sinA+√2/sinC最小值 |
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现充已死,エロ当立。
维基用户页:https://zh.wikipedia.org/wiki/User:Tttfffkkk Notable algebra methods:https://artofproblemsolving.com/community/c728438 《方幂和及其推广和式》 数学学习与研究2016. |
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