Add Pow x0 Add Pow x2 cos sec x0 2 x0 
Add Mul Pow x0 Add Add Pow x2 cos sec x0 2 -1 Add Add Pow x2 cos sec x0 2 Mul Mul x0 log x0 Mul Pow x2 Add cos sec x0 -1 Mul Mul x2 log x2 Mul Mul -1 sin sec x0 Mul tan x0 sec x0 1 