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         /{[s-(A+E)/2]^2-[(A-E)^2/4+B*D]}
Y(s)=[k*s+(F+D*k-A*k)+(C*D-A*F)/s]/{[s-(A+E)/2]^2-[(A-E)^2/4
             +B*D]}
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       +[(C*D-A*F)/(A*E-B*D)]*1/s
      +{[A*F-C*D)/(A*E-B*D)]*s+(A+E)*(C*D-A*F)/(A*E-B*D)}/
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