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Is there any function (if any) f: Z -> Z such that
f(f(n))=-n , for every n belongs to Z(integers) ??
I think that there is not any function like the one described above but how can we prove it. Any ideas??
Thanks in Advance
f(f(n))=-n , for every n belongs to Z(integers) ??
I think that there is not any function like the one described above but how can we prove it. Any ideas??
Thanks in Advance