解题的过程就是不断将未知转化为已知的过程。设想法就是实现这种转化的重要手段之一.它的策略思想是:对于一些较为复杂、繁难(甚至看起来无从下手)的问题,作出多样设想,使解题过程简捷而明确. 关于设想法的介绍,屡见于中学生读物及 The process of solving problems is to constantly convert unknowns into known processes. Hypothesis is one of the important means to realize this transformation. Its strategic idea is to make multiple assumptions for some of the more complex, arduous (even seemingly inopportune) problems, so that the problem-solving process is simple and clear. The introduction of this book is often seen in the reading of middle school students and