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The Laplace Transform - Theory and Applications (Hardcover, 1999 ed.)
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The Laplace Transform - Theory and Applications (Hardcover, 1999 ed.)
Series: Undergraduate Texts in Mathematics
Expected to ship within 12 - 17 working days
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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 un dergraduates. Th this end, this text
addresses a number of issues that are rarely considered. For
instance, when we apply the Laplace trans form method to a linear
ordinary differential equation with constant coefficients, any(n) +
an-lY(n-l) + . . . + aoy = 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 fraught 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. IX
X Preface Furthermore, it is sometimes desirable to take the
Laplace trans form 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."
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