This package includes a copy of ISBN 9781118477502 and a registration code for the WileyPLUS course associated with the text. Before you purchase, check with your instructor or review your course syllabus to ensure that your instructor requires WileyPLUS. For customer technical support, please visit http://www.wileyplus.com/support. WileyPLUS registration cards are only included with new products. Used and rental products may not include WileyPLUS registration cards. Known for its clear problem-solving methodology and it emphasis on design, as well as the quality and quantity of its problem sets, Introduction to Electric Circuits, 9e by Dorf and Svoboda will help readers to think like engineers. Abundant design examples, design problems, and the How Can We Check feature illustrate the texts focus on design.