inverting Laplace transforms

*To*: mathgroup at smc.vnet.net*Subject*: [mg95096] inverting Laplace transforms*From*: Leslaw Bieniasz <nbbienia at cyf-kr.edu.pl>*Date*: Tue, 6 Jan 2009 04:11:55 -0500 (EST)

Hello, I need to invert a few expressions representing Laplace transforms. I have heard that MATHEMATICA can be used for this purpose. Can anybody tell me how to do this? For example, I need to find a function f(t) for which the Laplace transform F(s) is F(s) = Sqrt[s + a]/(Sqrt[s] * (s - b)) where a > 0 and b > 0 are constants. Leslaw