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IF sets A and B are defined as A={(x,y)...

IF sets A and B are defined as `A={(x,y):y-(1)/(x),0ne x in R}`
`B= {(x,y):y=-x,x in R},`then

A

`AuuB=B`

B

`AcapB=phi`

C

`AcapB=A`

D

`AuuB=phi`

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