Automatic Control Systems

**Editorial Review** The "Automatic Control Systems 9th Edition" presents a mixed bag of experiences for customers, primarily revolving around the book's content quality versus its affordability. Several reviewers praised the exceptional price point of the book, highlighting options to purchase editions for as low as $6, which starkly contrasts with the regular prices exceeding $100 at college bookstores. This affordability seems to be a major draw, especially for students and educators looking to save on textbook costs. However, many users have expressed significant frustrations regarding the content itself. Engineering students have overwhelmingly pointed out numerous mathematical errors, logical leaps, and unexplanatory graphs throughout the text. Many assert that this makes the book challenging to navigate, particularly for those new to the subject matter. The lack of clarity and the presence of typos are noted as substantial hurdles, leading some to suggest that while the book might serve as a reference, it fails as an effective primary learning tool. Some reviews find the initial chapters a decent introduction to control theory, appealing to undergraduates and novices in the field. In contrast, others lament that this book is not a reliable or trustworthy resource and recommend seeking other texts entirely for learning purposes. Despite the mixed reviews, the satisfaction around the price and the physical quality of the book itself stands out, suggesting that while it may be helpful for review, students should Consider supplementary materials for a deeper understanding of control systems. **