The starship found in Star Trek: Enterprise (NX-01) was commissioned before the Federation was formed and therefore has a different classification (NX class).
The Enterprise name is featured on the NX class, a Constitution Class, Excelsior Class, Ambassador Class and Galaxy Class vessels.
Set on the Earth Ship Enterprise NX, the series was a prequel taking place 100 years before the original Star Trek series.
(b) If nx >o, (1+x).
Thus we arrive at the differential coefficient of f(x) as the limit of the ratio of f (x+8) - f (x) to 0 when 0 is made indefinitely small; and this gives an interpretation of nx n-1 as the derived function of xn (ï¿½ 45)ï¿½ This conception of a limit enables us to deal with algebraical expressions which assume such forms as -° o for particular values of the variable (ï¿½ 39 (iii.)).