如果抽象函数是一个函数集合,那么解抽象函数时常犯的错误有:(1)把元素或子集的个性当成集合的共性;(2)反过来,对集合隐藏的共性不能按需要在解题中进行充分挖掘.特别是当抽象函数的性质用函数方程组表示时,容易忽略“组中”各方程中变量的任意性而产生的“互动”. If the abstract function is a collection of functions, the common mistakes in solving abstract functions are: (1) the commonality of the elements or subsets as a set; (2) conversely, the commonality of collections can not be solved In particular, when the nature of abstract functions is expressed by a set of functional equations, it is easy to ignore the “interaction” resulting from the arbitrariness of the variables in the “” groups.