acos Add x0 Mul cos coth Pow asec pi -5 exp x0 
Mul -1 Mul Add 1 Mul cos coth Pow asec pi -5 exp x0 Pow sqrt Add 1 Mul -1 Mul Add x0 Mul cos coth Pow asec pi -5 exp x0 Add x0 Mul cos coth Pow asec pi -5 exp x0 -1 