函数概念教学中应注意的一个问题

An Aspect on Mathematical Function Concept

在函数概念教学中 ,往往容易忽略其定义域为非空数集这一要素 .这里通过例子说明在研究函数时 。

People are likely to overlook in teaching the essential factor that the domain of definition of function concept is just the nonempty set of number. This thesis puts forward the idea with examples that the domain of the definition should be paid much attention to in your research of function.