csch Mul Pow Add x1 x0 tanh sec x1 acot Add x2 x6 
Mul Mul Mul -1 coth Mul Pow Add x1 x0 tanh sec x1 acot Add x2 x6 csch Mul Pow Add x1 x0 tanh sec x1 acot Add x2 x6 Mul acot Add x2 x6 Mul Pow Add x1 x0 Add tanh sec x1 -1 tanh sec x1 