Hi there, my version of Mathematica may be too old and i'm not finding this one by hand so any help would be appreciated: ψ''(z)=[k2/4 –M2 –kδ(z)]ψ(z), where δ(z) is the Dirac delta, k and M constants. i can solve the same equation without the M^2 term by exp(k|z|/2), but this one proves to be much more complicated. Please note that this is part of a problem where solving the D.E. is actually not the issue: i'm supposed to use a software or anything that helps so i'm really just trying to get the answer.. thanks!!