A new revision of this successful classic text known for its elegant writing style, precision and perfect balance of theory and applications. This Ninth Edition is refined to offer students an even clearer understanding of calculus and insight into mathematics. It includes a wealth of rich problem sets which give relevance to calculus for students. Salas, Hille. and Etgen are recognized for their mathematical integrity, accuracy, and clarity. Key features that make this text an outstanding learning tool include: Precision and Clarity: Emphasis on mathematical exposition -- an accurate and understandable treatment of topics. Accessibility: Completely accessible to the beginning calculus student without sacrificing approximate mathematics. Balance of Theory and Applications: Problems drawn from the sciences and engineering are used to motivate calculus concepts which are then applied to a variety of disciplines through examples and exercises.