Add Pow Mul -0.785398163397448 x0 log sech sec x0 x0 
Add Mul Pow Mul -0.785398163397448 x0 Add log sech sec x0 -1 Add Mul log sech sec x0 -0.785398163397448 Mul Mul Mul -0.785398163397448 x0 log Mul -0.785398163397448 x0 Mul Mul Mul tanh sec x0 Mul -1 sech sec x0 Mul tan x0 sec x0 Pow sech sec x0 -1 1 