函数的单调区间表示方法初探

A Preliminary Exploration on Methods of Expressing the Monotonic Interval of Function

单调性是函数的一个重要性质,也是数学应用的重要方面,但在教学实践中单调区间的边界表示却比较混乱,为此,本文对涉及单调性教学几个阶段的教科书内容进行了比较,提出自己的一点看法。

Monotonicity is an important property of function, also is an important aspect of mathematics application, but in teaching practice, the expression of the monotonic interval boundary is a bit confusing. Therefore, the writer compares the textbook con-tents at several stages involving monotonicity, and puts forward some personal views.