log Pow x0 Mul -0.125000000000000 acos x0 
Mul Mul Pow x0 Add Mul -0.125000000000000 acos x0 -1 Add Mul -0.125000000000000 acos x0 Mul Mul x0 log x0 Mul -0.125000000000000 Mul -1 Pow sqrt Add 1 Mul -1 Mul x0 x0 -1 Pow Pow x0 Mul -0.125000000000000 acos x0 -1 