数形结合的思想,其实质是将抽象的数学语言与直观的图象结合起来,也就是对题目中的条件和结论既分析其代数含义又挖掘其几何背景,在代数与几何的结合上寻找解题思路·最常用的是以形助数的解题方法,其实质就是对图形性质的研究,使要解决的数的问题转化为形的讨论,实现“由一种 Its essence is to combine the abstract mathematical language with the visual image, that is, to analyze both the algebraic meanings and the geometric background of the conditions and conclusions in the title, and search for the combination of algebra and geometry Problem-solving ideas The most commonly used method is the problem-solving method based on the form-aid number. The essence is the study of the nature of the graph, and the problem of the number to be solved is transformed into a discussion of the form.