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一、题目再现若f(x)=10x~2+mx+n(m,n∈Z)在(1,3)有两个不同的零点,求f(1)f(3)的最大值.这是2014年宁波市参评中学高级职称的专业测试中的一道压轴题,解答的正确率不到2%(参评是47人,实际答对为1人).笔者是其中参评人员之一,也没有在现场答对.结束之后仔细分析,和读者
First, the title reproduction if f (x) = 10x ~ 2 + mx + n (m, n ∈ Z) in (1,3) with two different zeros, find the maximum value of f (1) f (3). This is a final issue in the professional testing of the senior professional title of Ningbo Middle School in 2014. The accuracy of the answer is less than 2% (47 participants, the actual answer is 1). The writer is one of the participants and there is no After careful analysis at the scene, and after the conclusion, and the reader