技法解读数形结合法是根据数与形间的对应关系,挖掘题目的几何背景,通过数与形的相互转化来解决数学问题的方法.对于函数图像的形状问题,可利用函数的性质来求解;对于函数图像的交点问题,可在同一个坐标系内画出两个函数的图像,直观地看出其交点情况;对于函数的零点问题,可借助函数的图像,从位置上分析零点的情况;对于抽象函数问题,可结合题设条件和函数的性质求解;对于有些 The method of interpreting the combination of numbers is to find out the geometric background of the subject according to the correspondence between the number and the shape and to solve the mathematical problem through the mutual transformation of the number and the shape.For the shape problem of the function image, ; For the intersection of function images, we can draw the image of two functions in the same coordinate system to visually see the intersection point; for the zero point of the function, we can use the image of the function to analyze the position of the zero point ; For the abstract function problem, it can be solved according to the condition of the problem and the nature of the function. For some