1. The problem statement, all variables and given/known data 1. The calculation of the probability of excitation of an atom originally in the ground state to an excited state, involves the contour integral INTEGRAL(-INF TO +INF) [S exp(iwt)/(t2 + s2)2dt Evaluate the above integral. 2. Relevant equations 3. The attempt at a solution Attempt: what i know that LAPLACE TRANSFORM OF (COS at) = s/(s2+ a2) Moreover this integral is looking inverse FOURIER TRANSFORM, But how to solve it. I am not getting it.