tan Pow 0.00160000000000000 asech Mul exp pi x0 
Mul Pow sec Pow 0.00160000000000000 asech Mul exp pi x0 2 Mul Pow 0.00160000000000000 Add asech Mul exp pi x0 -1 Mul -6.43615164973640 Mul exp pi Pow Mul Mul Mul exp pi x0 Mul exp pi x0 sqrt Add 1 Mul -1 Pow Mul Mul exp pi x0 Mul exp pi x0 -1 -1 