Question #306812

 Let f be the function from {a, b, c} to {1, 2, 3} such that f(a) = 2, f(b) = 3 and

f(c) = 1. Is f invertible, and if it is, what is it’s inverse?


1
Expert's answer
2022-03-07T17:16:04-0500

Since function f is a bijection, then it is invertible. To find its invertion we should swap parameter value and function value, so

f1(2)=af^{-1}(2)=a

f1(3)=bf^{-1}(3)=b

f1(1)=cf^{-1}(1)=c


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