Add Add atanh Add Add x0 Pow sec x2 Mul acosh x0 0.648054273663885 Add -1 x2 4 x2 
Mul Add 1 Mul Pow sec x2 Add Mul acosh x0 0.648054273663885 -1 Mul Mul sec x2 log sec x2 Mul 0.648054273663885 Pow Mul sqrt Add x0 -1 sqrt Add 1 x0 -1 Pow Add 1 Mul -1 Mul Add Add x0 Pow sec x2 Mul acosh x0 0.648054273663885 Add -1 x2 Add Add x0 Pow sec x2 Mul acosh x0 0.648054273663885 Add -1 x2 -1 