<P>With updated MATLAB<SUP>®</SUP>, <I>Mathematica</I><SUP>®</SUP>, and Maple™ code throughout, this second edition emphasizes more computational/numerical aspects as well as more applications and modeling in various fields. Along with new problems of varying levels of difficulty, this edition includes rewritten chapters on systems and techniques of differential equations. Chapter summaries highlight key concepts and associated computer codes. This edition also offers updated, more detailed ancillary materials. </P>