函数是高中数学的核心概念,也是历年高考考查的重点和热点,其性质众多且复杂,时常让人感到难以把握,尤其是对于一些条件或结构相似的函数问题,若不认真审题,仔细对比,则往往会产生思维上的误区和方法上的偏差,本文结合实例辨析十三对易错易混的函数问题,供参考. Function is the core concept of high school mathematics, and it is also the focus and hot spot of previous college entrance examinations. Its nature is numerous and complex, and it often makes people feel difficult to grasp. Especially for functional problems with similar conditions or structures, if you do not examine the questions carefully, compare them carefully. It often leads to misunderstandings in thinking and deviations in methods. This article analyzes thirteen pairs of error-prone and miscible function problems for reference.