不等式问题是高考的热点,有时被设计为填空、选择题,有时以证明题的形式出现。高考中用“放缩法”证明不等式的频率很高,不等式的放缩证明使题目更加复杂,增加了证题的难度。放缩法就是将式子变大或者变小,可以使问题得到简化,但这需要一定的技巧。放缩的技巧很多,下面就介绍几种常用的放缩方法,同学们可以自主选择,找出适合自己的解题思路。一、对分子或分母进行放缩大多数不等式都是分数不等式,所以对 The inequality problem is the hot spot of college entrance examination, sometimes designed to fill in the blank, multiple-choice questions, sometimes in the form of proof questions. College entrance examination with “deflation ” to prove the inequality of the high frequency of scaling inequality prove that the subject is more complex, increasing the difficulty of the question. Scaling is the formula larger or smaller, you can make the problem is simplified, but it requires some skills. Scaling a lot of skills, the following describes several commonly used scaling method, students can choose, find their own ideas for solving problems. First, scaling the numerator or denominator Most inequalities are fractional inequalities, so yes