Mathematical methods for engineers and scientists, 3 : fourier analysis, partial differential equations and variational methods ; with 79 figures and 4 tables / K.T. Tang. Tang, K. T., 1936- Mathematical physics Textbooks. Engineering mathematics Textbooks. Mathematical models Textbooks. QA401 .T36 2007 515 22 TAM Includes bibliographical references and indexes. Berlin : Springer, c2007. c2007. 2007 Text xi, 438 p. : eng