For this fourth edition of a text for students of economics, Chiang (University of Connecticut) and Wainwright (British Columbia Institute of Technology) add new chapters on the envelope theorem, advanced topics in optimization, and optimal control theory, and delete a chapter on mathematical programming. The book can serve as a text for a course on mathematical methods, and as supplementary reading in such courses as micro- or macroeconomic theory, and economic growth and development. This edition is updated with new examples based on current economic conditions. Annotation ©2004 Book News, Inc., Portland, OR