# Real Analysis

Question # 00350355 Posted By: sachbab Updated on: 07/31/2016 11:41 AM Due on: 08/01/2016
Subject Mathematics Tutorials:
Question
Let  $f:S\rightarrow S,$ where S is the set of all integers, be defined by$f(s)=as+b$, where a, b are integers. Find the necessary and sufficient conditions on a, b in order that $f\circ f=i_{S}$

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