1. The problem statement, all variables and given/known data 4y'-4y=x*e^(3x) 2. Relevant equations None 3. The attempt at a solution The question is to find the particular solution So I kinda know the way to solve this thing but the point is the start. I cannot figure out what will I set my y equal to. if it's only e^(3x) I will set my y=A*x*e^3x then find y' and substitute in the original equation to find the particular solution.