The Laplace Transform: Theory and Applications – Joel L. Schiff – 1st Edition

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The Laplace transform is a wonderful tool for solving ordinary and partial differential equations and has enjoyed much success in this realm. With its success; however; a certain casualness has been bred concerning its application; without much regard for hypotheses and when they are valid. Even proofs of theorems often lack rigor; and dubious mathematical practices are not uncommon in the literature for students.

In the present text; I have tried to bring to the subject a certain amount of mathematical correctness and make it accessible to undergraduates. To this end; this text addresses a number of issues that are rarely considered. For instance; when we apply the Laplace transform method to a linear ordinary differential equation with constant coefficients; any(n) + an-1y(n-1) +···+ a0y f(t); why is it justified to take the Laplace transform of both sides of the equation (Theorem A.6)? Or; in many proofs it is required to take the limit inside an integral. This is always frought with danger; especially with an improper integral; and not always justified. I have given complete details (sometimes in the Appendix) whenever this procedure is required.
Furthermore; it is sometimes desirable to take the Laplace transform of an infinite series term by term. Again it is shown that this cannot always be done; and specific sufficient conditions are established to justify this operation. Another delicate problem in the literature has been the application of the Laplace transform to the so-called Dirac delta function. Except for texts on the theory of distributions; traditional treatments are usually heuristic in nature.

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  • Preface
    1 Basic Principles
    2 Applications and Properties
    3 Complex Variable Theory
    4 Complex Inversion Formula
    5 Partial Differential Equations
    Appendix
    References
    Tables
    Answers to Exercises
    Index
  • Citation
    • Full Title: The Laplace Transform: Theory and Applications
    • Author/s:
    • ISBN-10: 0387986987
    • Edition: 1st Edition
    • Topic: Math
    • Subtopic: Mathematics
    • File Type: eBook
    • Idioma: English

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