With the help of this book, you will develop fundamental mathematical concepts and calculation techniques that you will need in the first semesters of your engineering studies for lectures on the basics of electrical engineering and other application lectures. From the very beginning of your studies, it is expected that you are familiar with mathematical relationships, master calculation methods, and can apply them confidently in sometimes quite complex situations. A solid grasp of mathematics is the key to understanding technical and logical relationships in the engineering field itself. The book is suitable for self-learning and reference alongside lectures. In addition to many fully worked-out mathematical examples, it contains numerous applications from engineering. Here, the presented mathematical methods are applied in typical cases relevant to your field. Tasks with complete solutions are included.