Question

Find, if possible, examples of functions f: N = N
having the following properties:
(a) m<n=f(m) < f(n)
(b) m <n=f(m) > f(n)
(d) if m, n are odd, then m<n=f(m) < f(n) but if m, n
are even, then f(m) = f(n). What happens (for your
example) in the case where one of m, n is even and
the other odd?​

Answer 1

Answer:

please give me the point