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inverse laplace of [(e^(-s))/(s)-(se^(-s))/(s^2+1)-(e^(-2s))/(s)+(se^(-2s))/(s^2+1)]
inverse laplace of [(e^(-s))/(s)-(se^(-s))/(s^2+1)-(e^(-2s))/(s)+(se^(-2s))/(s^2+1)]
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