Let \( f: N \rightarrow N \) be such that \( f(n+1)f(f(n)) \) for all \( n \in N \), then
(a) \(... VIDEO
Let \( f: N \rightarrow N \) be such that \( f(n+1)f(f(n)) \) for all \( n \in N \), then
(a) \( f(x)=x^{2}-x+1 \)
(b) \( f(x)=x-1 \)
(c) \( f(x)=x^{2}+1 \)
(d) None of the above
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