数学题总有难易之分.解一定难度的数学题,往往不易一蹴而就.理智地把要解的数学题分成两个或多个解题步聚或环节,先扫除相关障碍;或导入一些有助于问题解决的知识、结论、引理等等;乃至变化问题的等价方式,可代换的问题模式或思考方向,都是重要有效的思想方法或技巧.下面略举数 Math problems always have easy points. Solving a certain degree of difficulty math problems, often not easy to accomplish. Rational to solve the math problem is divided into two or more steps to solve problems or steps, first remove the obstacles; or import some have Knowledge, conclusions, lemmas and so on which help to solve the problem; and even the equivalent way of changing the problem, the substitutable problem mode or the thinking direction are all important and effective thought methods or techniques.