Question: Let F be a eld and : F[x] F[x] the function dened by (f(x)) = f(x + 1) for all f(x) F[x]. Show that is

Let F be a eld and : F[x] F[x] the function dened by (f(x)) = f(x + 1) for all f(x) F[x]. Show that is an automorphism of F[x] such that (a) = a for all a F.

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