Engineering Mathematics, Volume III, brings into focus a compact and to-the-point elaboration of the theories, and an easy-to-comprehend and lucid description of the concepts discussed in the book. The optimum use of worked-out examples, graded practice exercises and selected objective-type questions are the hallmarks of this text. This text deals with the functions of complex variables, various statistical techniques and numerical techniques in the simplest possible manner. This book is designed to serve as a basic text for undergraduate students of all branches of engineering.