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Mathematical Methods for Physics and Engineering - Matematica.NET

Mathematical Methods for Physics and Engineering - Matematica.NET

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25.5 INVERSE LAPLACE TRANSFORMf(x)1abxFigure 25.8b>a.The result of the Laplace inversion of ¯f(s) =s −1 (e −as −e −bs )withNow, despite appearances to the contrary, the integr<strong>and</strong> has no poles, as may be confirmedby exp<strong>and</strong>ing the exponentials as Taylor series about s = 0. Depending on the value of x,several cases arise.(i) For xb. (25.30)(iii) For a

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