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Mathematics 20 Online
OpenStudy (loser66):

Topology: Let S ={(x,y) in R^2 | xy >=1} find int S Please, help

OpenStudy (loser66):

I know \(Int (S) =\{(x,y) \in R^2 | xy>1\}\) but how to prove?

OpenStudy (loser66):

@campbell_st

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