1. The switch in the circuit shown in Figure has been closed for a long time before t = 0 but opened at t = 0. Solve for i(t) for t ≥ 0. *Hereby I attached the circuit diagram for the question above. And this is where I got so far. (6ohm+6ohm)=12ohm alpha=R/2L = 4 Neper. But then I don't know how to solve for the rest.