Find the steady-state current I (t) in the RLC-circuit in Fig. 275, where R = 10 , L = 1 H, C = 10 -1

Find the steady-state current I (t) in the RLC-circuit in Fig. 275, where R = 10 Ω, L = 1 H, C = 10^-1 F and with E(t) V as follows and periodic with period 2π. Graph or sketch the first four partial sums. Note that the coefficients of the solution decrease rapidly. Remember that the ODE contains E'(t), not E(t)