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[" that "g@f=f@g=1(R)" ."],[" Let "f:W r...

[" that "g@f=f@g=1_(R)" ."],[" Let "f:W rarr W" be defined as "f(n)=n-1," if "n" is odd and "f(n)=n+1," if "n" is "],[" cven.Show that "f" is invertible.Find the inverse of "f" .Here,"W" is the set of all "],[" even.Show that "f" is invertible.Find the inverse of "f" .Here,"W" is the set of all "],[" whole numbers."]

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