不等式的证明是高考中常考的一类问题,而利用放缩法证明不等式又是其中的一个难点,它综合考查学生的逻辑思维能力、分析问题和解决问题的能力.这里谈谈在不等式证明中的几种常见“放缩”方法,供参考. Inequalities prove that the college entrance examination often test a class of problems, and the use of scaling method to prove that inequalities is one of the difficulties, it comprehensive examination of students’ ability to think logically, analyze and solve the problem here to talk about in the inequality of proof Several common “scaling ” method for reference.