“数缺形时少直觉,形少数时难入微.”“数”是数学中的数量关系,如数字特征、点的坐标、等式、不等式等,表达的信息具有抽象性与精确性的特征;“形”是数学中的图形形式,表示量对应的图形、几何意义等,表达的信息具有直观性与共时性的特征.数形结合,就是把数量关系的精确刻画与空间形式的直观描述有机地结合起来,实现形象思维和抽象思维的优势互补,体现数与形的沟通和转换,使问题得以解决的数学思想.数形结合包含“以形助数”和“以数辅形”两个方 “” “Number ” is the number of mathematical relations, such as the number of features, coordinates of points, equations, inequalities, the expression of information is abstract and Accuracy of the character; “shape ” is a graphic form in mathematics, said the amount of the corresponding graphics, geometric meanings, the expression of information has the characteristics of intuitive and synchronicity.Combination, is the number of accurate description of the relationship And the intuitive description of the spatial form organically combine to achieve the image of thinking and abstract thinking complement each other to reflect the number and form of communication and conversion to solve the problem of mathematical thinking. And “to the number of auxiliary shape ” two parties