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1) Let A = { 1, 2, 3, 4}. Let R be the equivalence relation on A x A defined by (a,b)R(c,d) iff a+d=b+c. Find the equivalence class [(1,3)].

Answer» 1) Let A = { 1, 2, 3, 4}. Let R be the equivalence relation on A x A defined by (a,b)R(c,d) iff a+d=b+c. Find the equivalence class [(1,3)].


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