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问题问题153试说明初中教材中函数的定义与高中教材中函数定义的差异,并说明在高中重新给函数下定义的必要性.问题154全日制普通高级中学教科书(必修)《数学·(第一册(上)》(2006年人民教育出版社)第99页习题第4题是:某人开汽车沿一条直路以60km/h的速度从A地到150km远处的B地,
Question 153 shows the definition of functions in junior high school textbooks and the differences in definition of functions in high school textbooks, and explains the need to re-define functions in high schools. Problem 154 Full-time Ordinary High School Textbooks (required) "Mathematics (First The first issue of exercise book (above) (2006 People’s Education Press) on page 99 is: A person drives a car along a straight road from A to 150 km away along a straight road at a speed of 60km/h.