摘要
指出现行教科书中关于函数定义陈述的问题,分析了“y是x的函数”和“对应法则是函数”等说法的不准确,及其在学生思维上造成的混乱.阐明了由“关系”定义函数的优点,并说明这种定义有利于学生形成正确的函数概念,在教学上也是可行的.
The paper points.out the problem of the definition of functions in the present textbooks, 'y is a function of x'and 'corresponding rule is the function 'are not the exact definitions, which make confusions to students. The paper shows the advantage of the definition functions from relation and explains that the definition takes the advantage of leading the students to the right concept. Also it is feasible in teaching.
出处
《辽宁师范大学学报（自然科学版）》
CAS
1992年第4期343-345,352,共4页
Journal of Liaoning Normal University:Natural Science Edition
关键词
函数
对应法则
序对
关系
function
corresponding rule
ordered couple
relation
