Mul asech Pow sec x1 x0 3.14159265358979 
Mul 3.14159265358979 Mul Mul Pow sec x1 Add x0 -1 Mul sec x1 log sec x1 Pow Mul Mul Pow sec x1 x0 Pow sec x1 x0 sqrt Add 1 Mul -1 Pow Mul Pow sec x1 x0 Pow sec x1 x0 -1 -1 