If A = {1, 2, 3} and the relation R = {(x, y); x2 – y2≤5,, ∈}, then write R as a set of ordered pair.
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Given : A = {1, 2, 3}
relation R = {(x, y); x²– y²≤5,, ∈}
To Find : R as a set of ordered pair.
Solution:
x²– y²≤5
possible value of x are 1 , 2 , 3
1² - 1² ,1² - 2² , 1² - 3² ≤5 Hence ( 1 , 1) , (1 ,2 ) , (1 , 2)
2² - 1² , 2² - 2² , 2² - 3² ≤5 Hence ( 2 , 1) , (2 ,2 ) , (2 , 2)
3² - 1² > 5
3² - 2² = 5 , 3² - 3² < 5 Hence ( 3 , 2) , ( 3 ,3)
R = { ( 1, 1) , ( 1 ,2 ) , ( 1 , 3) , (2 , 1) , (2 , 2) , (2 , 3) , ( 3 , 2) , ( 3 , 3) }
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