Pow asec pi Mul -1.15782128234958 Pow sec x0 E 
Mul Pow asec pi Add Mul -1.15782128234958 Pow sec x0 E -1 Mul Mul asec pi log asec pi Mul -1.15782128234958 Mul Pow sec x0 Add E -1 Mul E Mul tan x0 sec x0 