asec Add -0.989992496600445 acosh x0 
Mul Pow Mul sqrt Add x0 -1 sqrt Add 1 x0 -1 Pow Mul Mul sqrt Add 1 Mul -1 Pow Mul Add -0.989992496600445 acosh x0 Add -0.989992496600445 acosh x0 -1 Add -0.989992496600445 acosh x0 Add -0.989992496600445 acosh x0 -1 