在某些较复杂的数学竞赛题,若整体求解,则十分困难,当我们仔细观察问题结构特征时,会发现其中包含着若干个形态、结构相同的部分.取其中一个部分进行深入研究,可揭示蕴含在背后的规律,会发现它们要么遵循相同的算理,要么各要素之间符合同样的等量关系.象这种先攻破一点,即探索发现解题规律,再击其余,即利用发现的规律来指导解题是一种重要的策略. In some more complicated math competitions, it is very difficult to solve the problem as a whole, and when we look closely at the structural features of the problem, we find that there are several morphologically and structurally identical parts. Taking one of the parts for further study, Revealing the law behind them and discovering that they either follow the same principle or the same equivalence relations between the various elements, such as breaking through the point first, exploring the law of solving problems, and then attacking the rest, using the findings The law to guide the problem solving is an important strategy.