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配方法、换元法、待定系数法是几种常用的数学基本方法。这些方法是数学思想的具体体现,是解决问题的手段,它不仅有明确的内涵,而且具有可操作性,有实施的步骤和作法。配方法是对数学式子进行一种定向的变形技巧,由于这种配成“完全平方”的恒等变形,使问题的结构发生了转化,从中可找到已知与未知之间的联系,促成问题的解决。待定系数法的实质是方程的思想,这个方法是将待定的未知数与已知数统一在方程关系中,从而通过解方程(或方程组)求得未知数。
With the method, for yuan law, pending coefficient method is several commonly used basic mathematics. These methods are the concrete manifestation of the mathematical thought and the means to solve the problem. They not only have clear connotation, but also have practical and practical steps and practices. The method of matching is to perform a directional transformation technique on the mathematical formula. Because of the equal deformation of the “perfect square”, the structure of the problem is transformed, and the relationship between the known and the unknown can be found out , To solve the problem. The essence of undetermined coefficient method is the idea of equation, this method is to unknowns unknown number and known number unified in the equation relationship, thus by solving equations (or equations) to obtain unknown.