Find the steady-state current I(t) in the RLC-circuit in Fig. 272, where R = 100?, L = 10H, C = 10??2 F and E(t) V as follows and periodic with period 2?. Sketch or graph the first four partial sums. Note that the coefficients of the solution decrease rapidly.

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E(1) 100 (m2) 100 (πt - 1²) if - if <1 <0 0 <1 < T T