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Relations and Functions — MATHS STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceMATHSRelations and Functions1 Mark
Question
A relation $R$ is defined on $N$. Which of the following is the reflexive relation?
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Answer

Consider, $R=\{(x, y)$ : xy is the square number, $x, y \in N\}$
As, $x x=x^2$, which is the square of natural number $x$.
$\Rightarrow \quad(x, x) \in R$. So, $R$ is reflexive.

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