数学知识之间存在着各种不同的关系,它们之间有着相近或相似的性质,因此我们在解题时应当抓住这些联系,利用它们相同、相近,相似等属性,通过联想、类比,把已解决问题的思路运用到解决新问题的思路上,这就是所谓的类比法.类比法是数学发现中最常用、最有效的方法和手段.波利亚在 There are a variety of different relations between mathematical knowledge, they have similar or similar nature, so we should seize these connections in the problem solving, use their same, similar, similar properties, through association, analogy, The idea of ​​solving problems has been applied to the solution of new problems. This is the so-called analogy method. The analogy method is the most common and effective method and method for mathematical discovery.