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solve L*(B*e^(α*t)*sin(β*t)*β^2) + R*(-B*e^(α*t)*cos(β*t)*β) + 1/C * (-B*e^(α*t)*sin(β*t)) = E*ω*cos(ω*t) for B, α=-R/(2*L), β=sqrt(R^2/L^2 - 4/(L*C)), t=0
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