sech asech Pow sec x6 Pow Mul -1 x0 Add -4 cos x1 
Mul Mul tanh asech Pow sec x6 Pow Mul -1 x0 Add -4 cos x1 Mul -1 sech asech Pow sec x6 Pow Mul -1 x0 Add -4 cos x1 Mul Mul Pow sec x6 Add Pow Mul -1 x0 Add -4 cos x1 -1 Mul Mul sec x6 log sec x6 Mul Pow Mul -1 x0 Add Add -4 cos x1 -1 Mul Add -4 cos x1 -1 Pow Mul Mul Pow sec x6 Pow Mul -1 x0 Add -4 cos x1 Pow sec x6 Pow Mul -1 x0 Add -4 cos x1 sqrt Add 1 Mul -1 Pow Mul Pow sec x6 Pow Mul -1 x0 Add -4 cos x1 Pow sec x6 Pow Mul -1 x0 Add -4 cos x1 -1 -1 