Our goal in written Mathematical Methods for Engineers is to answer "Initial boundary value problems, and Wave equation in spherical and cylindrical coordinates". This book is written for students in science, engineering, and mathematics who have completed calculus through partial differentiation. The present book is based on lectures given by the author to students of various colleges studying mathematics. In designing this course the author tried to select the most important mathematical facts and present them so that the reader could acquire the necessary mathematical conception and apply...