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Let a = r−{0}, the set of all nonzero real numbers, and consider the following relations on a × a. decide in each case whether r is an equivalence relation, justifying your answers. in the case that r is an equivalence relation, find the equivalence classes. (a) (a, b)r(c, d) if and only if ad = bc
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Let a = r−{0}, the set of all nonzero real numbers, and consider the following relations on a × a. d...
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