(s) = (1-3s) / (s^2+8s+21) A [(13*sqrt(5)/5)*sin(sqrt(5)t)*e^(-4t)] + [3*cos(sqrt(5)t)*e^ B [(13*sqrt(5)/5)*sin(sqrt(5)t)*e^(-4t)] - [3*cos(sqrt(5)t)*e^{ [(13*sqrt(5)/5)*sin(sqrt(5)t)*e^(4t)] - [3*cos(sqrt(5)t)*e^(- [(13*sqrt(5)/5)*cos(sqrt(5)t)*e^(-4t)] - [3*sin(sqrt(5)t)*e^M (E [(13*sqrt(5)/5)*sin(sqrt(5)t)*e^{(4t)] - [3*cos(sqrt(5)t)*e^{« F [(13*sqrt(5)/5)*sin(sqrt(5)t)*e^-4t)] - [3*cos(sqrt(5)t)*e^{

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