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结合导数应用的基础知识考查学生的推理论证能力、分类讨论能力和解决问题的能力已经成为当前高考命题的一个热点,而用导数方法解决方程根的个数问题又是其中的常见题型(如2013年高考山东卷理21题),但从对部分考生的调查情况来看,发现他们的答题情况却非常不乐观,考生在处理该类问题时思路方法单一、等价转化能力差、化简运算准确率
Combining the basic knowledge of derivative application to examine students’ abilities of reasoning and argumentation, classification and discussion, and ability to solve problems have become a hot spot in current college entrance examination propositions. However, solving the problem of number of roots by derivative method is one of the common problems 2013 college entrance examination in Shandong Volume 21 questions), but from the survey of some candidates, found that their answer is very optimistic about the situation, candidates in dealing with such issues thinking a single method, the equivalent conversion ability is poor, simplified Calculation accuracy