Now enhanced with the innovative DE Tools CD-ROM and the iLrn teaching and learning system, this proven text explains the "how" behind the material and strikes a balance between the analytical, qualitative, and quantitative approaches to the study of differential equations. This accessible text speaks to students through a wealth of pedagogical aids, including an abundance of examples, explanations, "Remarks" boxes, definitions, and group projects. Author Dennis G. Zill wrote this book with the student's understanding kept firmly in mind. He presents the material in a straightforward, readable, and helpful manner, while keeping the level of theory consistent with the notion of a "first course."