函数思想是高中数学思想的核心,更是高考热点.近年高考数学试题中不断出现与反函数有关的考题,这些试题多数都是小而活的选择、填空题.对于这类考题,考生要是象常规题一样按部就班进行解答,不仅有“小题大作”之嫌,而且必然因浪费时间而隐含“潜伏丢分” The idea of ​​function is the core of high school mathematics thinking, and it is also a hot spot for college entrance examination. In recent years, examination questions related to inverse function have appeared in the mathematics questions of college entrance examination. Most of these questions are small and lively choices and fill in blank questions. For such questions, candidates should be like Answering questions step by step according to the same routine questions not only has the suspicion of a “big trick”, but also implies a “hidden drop point” due to a waste of time.