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  3. r is included in (r-{0} )x(r-{0} ) r = {(x,y) : xy

R is included in (R-{0} )x(R-{0} ) R = {(x,y) : xy >0} Show that R is...

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Advance Math

R is included in (R-{0} )x(R-{0} )

R = {(x,y) : xy >0}

Show that R is an equivalent relation and find f its equivalentclasses

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