Zill D.G., Wright W.S. Differential Equations with Boundary-Value Problems

8th Edition. — Cengage Learning, 2012. — 672 p. — ISBN 1-111-82706-0, 978-1-111-82706-9.Differential Equations with Boundary-Value Problems, 8th Edition strikes a balance between the analytical, qualitative, and quantitative approaches to the study of differential equations. This proven and accessible book speaks to beginning engineering and math students through a wealth of pedagogical aids, including an abundance of examples, explanations, "Remarks" boxes, definitions, and group projects. Written in a straightforward, readable, and helpful style, the book provides a thorough treatment of boundary-value problems and partial differential equations.True PDF