Amazon.com description: Product Description: The Study Guide is based on David Lay's many years in the classroom, and has been updated so students can take full advantage of the projects and data in the Third Edition of the text. This guide gives the worked-out solutions to model problems that correspond with exercises in the text, along with study tips, hints to students, instructions for using MATLAB, Mathmatica, and Maple along with the text, additional technology exercises, and expanded coverage of some text material.