The purpose of this book is to give an introduction to the Laplace
transform on the undergraduate level. The material is drawn from notes
for a course taught by the author at the Milwaukee School of
Engineering. Based on classroom experience, an attempt has been made to
(1) keep the proofs short, (2) introduce applications as soon as
possible, (3) concentrate on problems that are difficult to handle by
the older classical methods, and (4) emphasize periodic phenomena. To
make it possible to offer the course early in the curriculum (after
differential equations), no knowledge of complex variable theory is
assumed. However, since a thorough study of Laplace. transforms requires
at least the rudiments of this theory, Chapter 3 includes a brief sketch
of complex variables, with many of the details presented in Appendix A.
This plan permits an introduction of the complex inversion formula,
followed by additional applications. The author has found that a course
taught three hours a week for a quarter can be based on the material in
Chapters 1, 2, and 5 and the first three sections of Chapter 7. If
additional time is available (e.g., four quarter-hours or three
semester-hours), the whole book can be covered easily. The author is
indebted to the students at the Milwaukee School of Engineering for
their many helpful comments and criticisms.