按照一定的法则,把一个数或式分解为几个数或式,使复杂问题转化为简单易解的基本问题,以便分而治之,各个击破,来达到解决问题之目的.这就是证明不等式的分解策略. According to certain rules, a number or formula is decomposed into several numbers or formulas, so that the complex problem is transformed into a simple and easy-to-solve basic problem, so as to divide and conquer and break through each to achieve the purpose of solving the problem. This is to prove the inequality decomposition strategy. .