I haven't been to college, and I want to teach myself college courses. I want to ask, do you need to learn mathematics for mechanical and automation control majors? How useful it is in actual enterprises, Mechanical numerical control is necessary, which is the foundation, but it is not used much. Machinery is mainly used for drawing and technical applications, such as three views of parts, sectional views of parts, rotary cutting, local cutting, mechanical CAD drawing, locksmith, metalworking, and these processes. Electronic technology can also be learned, which requires a higher level of mathematics. In short, the specialist level only requires paying attention to applications, such as understanding and drawing parts processing drawings and machining and operating lathes. Undergraduates will learn more theoretical things.