“数”和“形”是数学学习的两个基本对象,对于一些问题,单纯地从“数”的角度去分析探求需要分类讨论,运算会较繁冗,因此,应当设法从“形”的角度去构造直观图形来刻划问题的条件和结论,使错综复杂的关系变得清晰可辨.数形结合是根据数量与图形之间的对应关系通过数与形的相互转化来解决数学问题的一种重 “Number ” and “Form ” are the two basic objects of mathematics learning. For some problems, it is more complicated to analyze and explore simply from the perspective of “number From the perspective of the ”shape" to construct intuitive graphics to characterize the conditions and conclusions of the problem, so that complex relationships become clear and discernable. Combination of digital form is based on the number and the corresponding relationship between the graphics by the number and form of mutual Conversion to solve the mathematical problems of a heavy