I have a problem that I thought could be easy to solve it but I couldn't.  I'm working in wave propagation in random media and I'm trying to create a routine to solve problems using Karal's and Keller's approach, it consists in transform a differential equation (describing the form of a wave) with random coefficients over a parameter into an integro-differential equation over a mean wave (a plane wave solution that produces a dispersion’s relation taking into account the randomness of the media...