由于函数的图象直观,启迪思维;函数的定义严谨,科学性强;函数的性质内容丰富、具体,实用性强,因此在研究一些数学问题时,我们可通过构造函数来解题.本文分类举例说明,供中学数学教师阅读参考.一、构造一次函数例1设a,b,c均为绝对值不大于m(m>0)的实数 Because of the intuitionistic function of the image, it is enlightening thinking; the definition of the function is rigorous and scientific; the nature of the function is rich in content, concrete and practical, so we can solve the problem through the constructor when we study some mathematical problems. For example, for high school mathematics teachers to read the reference.One, the construction of a function Example 1 Let a, b, c are absolute value is not greater than m (m> 0) real