抽象函数是指没有给出函数的具体解析式 ,只给出一些特殊条件 (如函数的定义域、经过的特殊点、递推式、部分图象特征等 )的函数 .它是高中数学函数部分的难点 ,也是高中与大学函数部分的一个衔接点 .热点分析以往抽象函数作为选择题或填空题偶尔出现在高考试题中 ,但从 2 0 0 An abstract function is a function that does not give a specific analytic function of the function, and only gives some special conditions (such as the definition of the function domain, passing special points, recursion, partial image features, etc.). It is a part of the high school math function. Difficulty is also a point of convergence between the high school and university function parts. Hotspot analysis Previous abstract functions as multiple choice questions or fill in blank questions occasionally appear in high exam questions, but from 200