数学问题千差万别,种类繁多,所使用的数学方法也很多,特别是有些数学方法,在解决数学问题时,运用非常普遍.这些方法有数形结合、换元法、配方法、判别式法、放缩法、相消(约)法,消元法等.下面就此分别谈一谈.一、数形结合中学数学的研究对象主要是数量关系与空间形式,两者之间有着紧密的联系.一方 Mathematical problems vary widely, with a great variety of mathematical methods used, especially some mathematical methods that are very common in solving mathematical problems. These methods include the combination of several forms, the method of substitution, the method of formulation, the method of discriminant, Law, elimination (about) law, eliminate the element method, etc. Here are the talk about each one .In the first, the number of high school mathematics research object is mainly the relationship between quantity and space form, there is a close relationship between the two.