在中学阶段,常常利用一些基本不等式或一些重要不等式进行证明或求最值,其应用相当广泛.而在实际运用过程中,一些同学常常忽视了不等式等号成立的条件,进而造成了一些错误,甚至造成一些题目无法获解.实际上,基本不等式与重要不等式等号成立的条件应用相当广泛,甚至在一些较难题目中,灵活运用“相等”来搭桥,天堑也会变通 In the middle school stage, some basic inequalities or some important inequalities are often used to prove or find the most value, which is widely used.At the time of practical application, some students often neglect the conditions for the establishment of inequalities and then make some mistakes, In fact, the basic inequalities and important inequality equality conditions for the establishment of a very wide range of applications, even in some difficult topics, the flexible use of “equal” to bypass, natural moat will be flexible