This textbook and exercise book systematically and comprehensively covers three chapters of electrical engineering that expand on the fundamentals of electrical engineering from volumes 1 and 2, thus bridging to application subjects. For example, it includes the Laplace transformation for control engineering, the Fourier transformation for signal theory, and the four-pole theory for communication technology. Numerous problems with detailed solutions in the appendix complement the theoretical discussions and facilitate effective exam preparation. A list of the notations, symbols, and units used, along with additional recommendations for students, makes working with the book easier.