论文部分内容阅读
高一年级的同学在学习函数这一章的时候,容易出现认识上的误区,下面归纳六种典型的错误认识,旨在对初学函数的同学有所帮助.误区一函数y=f(x)与y=f(x+1)的定义域是一致的.例1(1)函数y=f(x)的定义域是[一1,1],则函数y=f(x+1)的定义域是__.(2)函数y=f(x+1)的定义域是[-1,1],则函数y=f(x)的定义域是__.要弄清楚函数y=f(x)与y=f(x+1)定义域的区别,必须准确地理解抽象函数的有关概念,首先不论函数y=f(x),还是y=f(x+1),其中定义域都是指自变量x的取值范围.
The first grade students in the study of this chapter chapter, prone to misunderstandings, the following summarizes the six typical misconceptions, aimed at the beginner function of students to help. Misunderstanding a function y = f (x) Is consistent with the domain of y = f (x + 1). Example 1 (1) The function y = f (x) (2) The domain of the function y = f (x + 1) is [-1,1], the domain of the function y = f (x) is __. To find out that the function y = The difference between f (x) and y = f (x + 1) defines the concept of an abstract function that must be accurately understood first of all whether the function y = f (x) or y = f (x + 1) Fields refer to the range of the argument x.