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On all real numbers, (aRb) if and only if (a^2+b^2=0). Is this an equivalence relation?

Answer and explanation

Correct answer: No, it is not reflexive

Step 1: For real numbers, (a^2+b^2=0) only when (a=0) and (b=0). Step 2: For (1R1), (1^2+1^2=2), so (1R1) is false. Step 3: Not every element is related to itself, so it is not an equivalence relation.

Related tags

Sum Of SquaresReflexivity FailureReal NumbersNot EquivalenceEquivalence RelationRelations And FunctionsMathematicsClass 12 Mcq

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