The first one is the most intuitive, which can help us improve our academic performance, enter a higher level university and lay a good foundation for our future work and life. The purpose of studying hard for more than ten years is to find a job. Under the control of this way of thinking, mathematics provides you with a bunch of? Useless? Symbol. ? The second is to learn mathematics and improve mathematics literacy and self-cultivation. These people are usually workers related to mathematicians or math enthusiasts. They pursue not only simple knowledge theorems and problem-solving methods, but also thinking methods and logical relations hidden behind mathematics. Of course, their understanding of mathematics is much higher than that of ordinary people, and their thinking quality is much higher. The third category should belong to a high level of mathematics. What this kind of people usually pursue is how to make mathematics the source of social and economic development and make greater contributions to the progress of human civilization. These people come from all walks of life, and the emergence of every high-tech achievement is inseparable from the influence of mathematics. As the hottest artificial intelligence today, if there is no mathematics, forget it. But many people only belong to the first floor, because in general, ordinary people will only see vested interests that are useful to them, and will not really understand and explore the role and value of the event itself. On the Internet and other websites, we enjoy all the conveniences brought by the Internet, but it is easy to ignore the key role played by mathematical knowledge. Then, what is the function of learning mathematics after a person finishes primary school, junior high school, senior high school, university and so on? That will affect the way and angle of looking at things. When we put down our books and leave the campus to work, the concepts, formulas and theorems we have learned over the years will gradually be forgotten. However, in this process, the thinking methods and ideas deeply engraved in our minds, as well as the factors such as mathematics learning methods, logical reasoning, rational spirit and perspective, will always affect our study, work and life.