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在数学竞赛中我们经常碰到一些有关函数的试题,这是因为函数概念是数学中一个重要概念。深刻理解函数概念和灵活地利用函数的性质,对于发展创造性思维能力有着十分重要的作用。在这一讲里,我们准备加深对函数记号的理解,并介绍一些简单函数方程的解法。一、函数记号“y是x的函数”这一数学语言,我们通常用记号y=f(x)表示,这里f表示的是x与y之间的一种对
In mathematics competitions, we often encounter some questions about the function, because the concept of function is an important concept in mathematics. The profound understanding of the concept of functions and the flexible use of the nature of functions play a very important role in the development of creative thinking. In this lecture, we are ready to deepen our understanding of function notation and introduce solutions to some simple functional equations. First, the function token “y is a function of x” is a mathematical language. We usually use the notation y=f(x), where f represents a pair between x and y.