4) Consider the functions f: N \ {0} → N \ {0} and g: N\ {0} → N \ {0} given by, f(x) = x + 1 and g(x) = f(x)-1_ifæ> 1, if x = 1 Which of the following option(s) is(are) true? f is one to one but not onto f is neither one to one nor onto. g is onto but not one to one. g is a bijective function. 1 por