exp Add -2 cosh Add acsc sec x0 1.57079632679490 
Mul exp Add -2 cosh Add acsc sec x0 1.57079632679490 Mul sinh Add acsc sec x0 1.57079632679490 Mul -1 Mul Mul tan x0 sec x0 Pow Mul Mul sqrt Add 1 Mul -1 Pow Mul sec x0 sec x0 -1 sec x0 sec x0 -1 