下面例析有关映射的四大热点问题.供参考.一、概念辨析型解答该类问题的依据就是映射定义,或是或非都要以定义为准绳.判断某“对应法则”是否为A→B的映射,主要表现为“一对一”及“多对一”的两种特殊 The following example analysis of the four hot issues related to the mapping. For reference. First, the concept of analysis of the type of solution to the problem is based on the mapping definition, or both or not to be defined as the criterion. To determine whether a “correspondence rule” is A → The mapping of B is mainly expressed as two special types of “one to one” and “many to one”.