Hi, I have this differential equation to solve its broken down in to 3 parts but i`m having trouble doing the 2nd part any ideas would be great!

Consider the intial value problem

(y`` x^2) - (4xy`) + 6y = g(x) x>0 y(0)=y`(0)=0

part a) Write this de in self adjoint form which i have done

(1/x^4 y`)` + 6y/x^6 = g(x)x^-6

part b) Find the influence function for this

i know the formula for this but i have to find y1 and y2 but i have no idea on how to do this can anyone help me?

thanks