sech Pow tan cot coth x0 0.642092615934331 
Mul Mul tanh Pow tan cot coth x0 0.642092615934331 Mul -1 sech Pow tan cot coth x0 0.642092615934331 Mul Pow tan cot coth x0 -0.357907384065669 Mul 0.642092615934331 Mul Pow sec cot coth x0 2 Mul Mul -1 Pow csc coth x0 2 Mul -1 Pow csch x0 2 