Linear Systems and Signals
The book emphasizes physical appreciation of concepts through heuristic reasoning, metaphors, analogies, and creative explanations. Such an approach is different from a purely deductive technique that uses mere mathematical manipulation of symbols and ignores the physical meaning behind various derivations. This deprives a student of the enjoyable experience of logical uncovering of the subject matter. Here the author uses mathematics not so much to prove axiomatic theory as to support and enhance physical and intuitive understanding. Wherever possible, theoretical results are interpreted heuristically and are enhanced by carefully chosen examples and analogies.