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Mul Pow sech Pow Pow sech x0 Add x0 x7 -1.09975017029462 2 Mul Pow Pow sech x0 Add x0 x7 -2.09975017029462 Mul -1.09975017029462 Mul Pow sech x0 Add Add x0 x7 -1 Add Mul Add x0 x7 Mul tanh x0 Mul -1 sech x0 Mul sech x0 log sech x0 