3 public questions tagged with this topic.
Applying the basic concept, complete solution: write formula, plug data, do arithmetic. Final value matches Reflexive relation. Simple and accurate.
Ref: NCERT Mathematics Class XI — Sets, Relations and Functions
The trick is solving fully: apply relevant formula, put numbers, compute. Result comes as (2,3) ∈ R. Easy verification shows it satisfies condition.
Ref: NCERT Mathematics Class XI — Sets, Relations and Functions
From the definition, after simplifying, (5, 2), (9, 4), (11, 5) is left. The method is simple: formula → substitution → calculation → answer.
Ref: NCERT Mathematics Class XI — Sets, Relations and Functions
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