1. The problem statement, all variables and given/known data Find Io(s)/Ii(s) 2. Relevant equations Basic KVL laws. 3. The attempt at a solution My idea is to start from the RHS of the circuit until I get a relation between Io(s) and Ii(s). Actually I stopped at this point, I wondered whether my approach is appropriate or not since the equations is getting longer and longer. What do you say?