First, engineering mathematics is not a subject. Complex variable function, integral transformation, linear algebra, probability theory, etc. Collectively referred to as engineering mathematics. Personally, if you want to do electrical basic design and research and development in the future, or study related disciplines, complex variable, integral and line generation are all useful. If you just work as an electrical engineer or related application industry, you may not need it. Maybe you can use it occasionally, but it's too late to learn now. . . So, learn, not learn how to graduate. . . .