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按惯例,每次考试后教师都要引导学生对试卷上的题目进行再一次的回顾与分析,共同对某一阶段的学习情况进行反思,通过试题的讲评让学生找到自己学习上的误区,并加以改进,为进一步学习提供借鉴.这次,笔者在试题讲解过程中,特别关注到一道选择题,在讲解过程中做了如下反思.题目已知函数f(x)的定义域为R,f(-1)=2.对任意x∈R,f’(x)>2.则不等式f(x)>2x+4的解集为()
As a rule, after each test, teachers should guide students to review the questions on the paper once again and analyze the common learning of a period of reflection, through the test questions to enable students to find their own learning errors, and In order to provide reference for further study.This time, the author pays special attention to a multiple choice question during the explanation of the test questions, and makes the following reflections in the explanation process: Problem The known function f (x) has the domain R, f (-1) = 2. For any x∈R, f ’(x)> 2. Then the solution set of the inequality f (x)> 2x + 4 is ()