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On (A={0,1,2}), (R={(a,b):\frac{a}{b}=1}), where the fraction is defined only for (b\neq 0). Is (R) reflexive?

Answer and explanation

Correct answer: No because ((0,0)) is not defined

Step 1: Reflexivity needs ((0,0)), ((1,1)), and ((2,2)). Step 2: (\frac{0}{0}) is undefined, so ((0,0)) cannot belong to the relation. Step 3: With sets containing zero, read division conditions carefully.

Related tags

RelationsFunctionsReflexive RelationUndefined FractionRelations And FunctionsMathematicsClass 12 Mcq

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