Before Memmo my notes were scattered across PDFs. Now a workspace pulls everything into one place — I see exactly what's still left to study.
Signals and Systems, Second Edition, by Simon Haykin and Barry Van Veen, is designed for one- or two-semester undergraduate courses. It introduces core concepts of signals and systems, including classification, operations, and system analysis using Fourier, Laplace, and z-transforms. The book emphasizes practical applications in communications, filter design, and control systems, with a balanced approach to continuous- and discrete-time topics.
This International Adaptation offers expanded content with additional examples and exercises, and features a reorganized structure in selected chapters to better support diverse learning needs and improve course alignment.
Before Memmo my notes were scattered across PDFs. Now a workspace pulls everything into one place — I see exactly what's still left to study.
Memmo's summaries are gold before exams. I don't have to re-read 800 pages two weeks before — just the important parts.
The AI chat has saved me the night before an exam more than once. I just keep asking until I get it — no waiting on a study group to reply.
The quizzes hit exactly what I need to know. Memmo tracks what I get stuck on — so I only practice what's worth it.
Flashcards with spaced repetition are magic. Memmo knows when I'm about to forget something and brings it back.
The AI podcasts are my favorite. I listen on my way to school and get a recap without sitting at a computer.
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