Mul 0.0183156388887342 Pow sec coth acot Add x0 -2 -4 
Mul 0.0183156388887342 Mul Pow sec coth acot Add x0 -2 5 Mul -4 Mul Mul tan coth acot Add x0 -2 sec coth acot Add x0 -2 Mul Mul -1 Pow csch acot Add x0 -2 2 Mul -1 Pow Add 1 Mul Add x0 -2 Add x0 -2 -1 