14. If the infinitesimal f (x) is an infinitesimal of higher order with respect to the infinitesimal g (x), then the limit of F (x) / g (x) is ()

14. If the infinitesimal f (x) is an infinitesimal of higher order with respect to the infinitesimal g (x), then the limit of F (x) / g (x) is ()

0
Taking g (x) as a whole, f (x) is the infinitesimal of higher order of G (x), which can be recorded as O (g (x)),
F (x) / g (x) is 0 / 0, so the result is 0