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Question

Let A={2, 3, 4, 6} and R={(x,y):y = x2x; x,yA} is a relation on A, then write R as set of ordered pairs ?

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Solution

Given, A={2, 3, 4, 6} and R={(x,y):y = x2x; x,yA}

Putting value of elements of A for R
x=2y=2x=3y=6x=4y=12x=6y=30
But, y=12,30A

So, the set of elements for R is
R={(2,2),(3,6)}

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