论文部分内容阅读
在研究函数问题时,常会遇到两个函数图像的交点问题.处理这类问题一般有两种方法:(1)已知两个函数的解析式,求这两个函数图像的交点坐标.此时可将两个函数解析式看成两个方程,组成方程组,求出方程组的解,即为交点的坐标.我们可以将这种方法称之为“求交点法”.这种方法比较常见,同学们大都能掌握.(2)两个函数的解析式中含有待定系数,利用方
In the study of function problems, we often encounter the problem of intersection of two function images.There are two ways to deal with this kind of problems: (1) Knowing the analytical expression of two functions and finding the coordinates of the intersection of these two function images. We can consider the two function analytic equations as two equations, form an equation group and find the solution of the system of equations, that is, the coordinate of the intersection point. We can call this method “intersection method”. Methods are more common, most students can master. (2) two functions of the analytic formula contains the coefficient to be determined, the use of party