Mul Add asech Add asec sec x0 x2 4 Add atan cosh x0 -4 
Add Mul Add atan cosh x0 -4 Mul Mul Mul tan x0 sec x0 Pow Mul Mul sqrt Add 1 Mul -1 Pow Mul sec x0 sec x0 -1 sec x0 sec x0 -1 Pow Mul Mul Add asec sec x0 x2 Add asec sec x0 x2 sqrt Add 1 Mul -1 Pow Mul Add asec sec x0 x2 Add asec sec x0 x2 -1 -1 Mul Add asech Add asec sec x0 x2 4 Mul sinh x0 Pow Add 1 Mul cosh x0 cosh x0 -1 