Mul 2 sec Mul Add Pow sech sec x0 x0 3 csc x3 
Mul 2 Mul Mul tan Mul Add Pow sech sec x0 x0 3 csc x3 sec Mul Add Pow sech sec x0 x0 3 csc x3 Mul csc x3 Mul Pow sech sec x0 Add x0 -1 Add Mul x0 Mul Mul tanh sec x0 Mul -1 sech sec x0 Mul tan x0 sec x0 Mul sech sec x0 log sech sec x0 