The charge Q at time in an electrical circuit is modelled by the differential equation d²Q do L²0 + R¹0 + 10 = E(1), +R Q dt² dt where L, R, C, and E are the inductance, resistance, capacitance and electromotive force, espectively. Using the method of undetermined coefficients, find Q(t), if L=1 henry, = 40 ohm, C=16×10 farad, and E(t) = 100 cos 10t volts.

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