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  4. If A = x: x2 - 3x + 2 = 0 , and R is a universal relation on A, then R is

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Q. If $A = \{ x : x^2 - 3x + 2 = 0 \}$ , and R is a universal relation on A, then R is

Relations and Functions - Part 2

Solution:

$A = \{1,2\}$, as R is universal relation so,
$R = A \times A $
R = $\{(1,1), (1,2) , (2,1), (2,2)\}$