NCERT Exercise 2.2 Q4 - Relations and Functions
Question: Fig. 2.7 gives a relation from P={5,6,7} to Q={3,4,5} with 5 to 3, 6 to 4 and 7 to 5. Write it in set-builder and roster forms, and find domain and range.
Answer: R={(x,y) in P x Q : x-y=2}={(5,3),(6,4),(7,5)}; domain=P; range=Q.
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