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Mathematics, 13.07.2019 21:20 ravenl1001

Suppose that a is a nonempty set, and f is a function that has a as its domain. let r be the relation on a consisting of all ordered pairs (z, y) such that f(x) = f(y). (a) show that r is an equivalence relation on a (b) what are the equivalence classes of r?

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