Most students study calculus for its use as a tool in areas other than mathematics. They desire information about why calculus is important, and where andhow it can be applied. I kept these facts in mind as I wrote this text. In particular, when introducing new concepts I often refer to problems that are familiar to students and that require methods of calculus for solutions. Numerous examples and exercises have been designed to further motivate student interest, not only in the mathematical or physical sciences, but in other disciplines as well. Figures are frequently used to bridge the gap between the statement of a problem and its solution. In addition to achieving a good balance between theory -and applications, my primary objective was to write a book that can be read and understood by college freshmen. In each section I have striven for accuracy and clarity of exposition, together with a presentation that makes the transition from precalculus mathematics to calculus as smooth as possible.