Question: Let A = {-1, 1, 2, 4} and B = {1,2} and define relations R and S from A to B as: For all (x,

Let A = {-1, 1, 2, 4} and B = {1,2} and define relations R and S from A to B as:

For all (x, y) A X B,

x R y iff | x| = | y|,

and

x S y iff x-y is even

What is in R?

What is in S?

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