Question: Let f: Z5 Z5 be defined by f(x) = x + 4 (mod 5). (a) Write the inverse function as a set of ordered

Let f: Z5 Z5 be defined by f(x) = x + 4

Let f: Z5 Z5 be defined by f(x) = x + 4 (mod 5). (a) Write the inverse function as a set of ordered pairs. (b) Based on your inverse function, find 2 and 4 in Z5. It might help to find f-(x) as if it were a function from RR and then work mod 5.

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