1. The problem statement, all variables and given/known data Assume ψ(x,0)=e^(-λ*absvalue(x)) for x ± infinity, find Φ(k) 2. Relevant equations Φ(k)=1/√(2π)* ∫e(-λ*absvalue(x))e(-i*k*x)dx,-inf, inf 3. The attempt at a solution, my thought was Convert the absolute value to ± x depending on what of the number line was being integrated. U=i*k*x du/(i*k)=dx 1/√(2π)*∫e-λ*√(u2/(i*k)2)*e(-u)du,-inf,inf Now fixing abs value 1/((2π)*(i*k))*∫eλ/(i*k)*ue(-u),du,-inf,o the integrand for one half of the number line looks like: E(u*(λ/(ik)-1) For which i get: after limits are taken for that half of the integral (1/((λ/ik)-1)) Then similar integral for other half Is this the right track or am i totally off?