sech Pow csch Add x0 csc x2 x1 
Mul Mul tanh Pow csch Add x0 csc x2 x1 Mul -1 sech Pow csch Add x0 csc x2 x1 Mul Pow csch Add x0 csc x2 Add x1 -1 Mul x1 Mul Mul -1 coth Add x0 csc x2 csch Add x0 csc x2 