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2014联赛二试的不等式问题是三元对称不等式,而且是严格的不等(即等号取不到),命题组给出的第一种解答是运用了不等式的放缩性证明,多次放缩的后果使得等号取不到,虽然达到了最终的目的,感觉起来不等式成立的精确系数似乎没找到,第二种解答最终放缩成变量c的函数,再设法求出最值,同样经历了多次放缩.本文受陈计老师的思想“不等式的证明就是恒等式的证明再添上一些项”的思想启发,联想严格的不等可能
The inequality problems of the 2014 League II trial are the ternary symmetric inequalities, which are strictly different (that is, the equals sign can not be obtained). The first solution given by the proposition group is to use the scalability proof of inequality. The result of shrinking makes the equals sign not to be obtained. Although it has reached its final purpose, it seems that the exact coefficient that holds inequality does not seem to be found. The second solution finally shrinks and shrinks into a function of variable c and tries to find the best value and the same experience A number of deflation .This article is inspired by the idea of teacher Chen “inequality proof is proof of identity add a few items ” thought inspiration, association is not strictly possible