1. The problem statement, all variables and given/known data In the above diagram, iin(t) = -0.5u(-t) + 2u(t) A R = 2 Ω L = 1 H C = 8 mF Find the zero-input, zero-state, and complete responses of vC(t) and iL(t) for t > 0. 2. Relevant equations σ = R/2L for series RLC circuits ωn = 1/(sqrt(LC)) for RLC circuits ωd = sqrt(ωn2 - σ2) x(t) = [Acos(ωdt) + Bsin(ωdt)]e-σt for underdamped source-free RLC circuits 3. The attempt at a solution This is what I have so far, and I think it's correct, but I am totally confused as to what I need to do to get the zero-input response. I'm not really sure if I understand it conceptually.