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The question is asking me to find/describe the set of equivalence classes of the following equivalence relations.
a) let S: R^2 --> R^2 where (x1,y1)S(x2,y2) if and only if x1=x2
I don't understand equivalence classes or relations really and I don't even know what they are asking... I have a rough idea of what they are but the book isn't really making it clear... can anyone help?
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