NCERT Exercise 1.1 Q11 - Relations and Functions
Question: On the set A of points in a plane, let R = {(P, Q) : distance of P from the origin equals distance of Q from the origin}. Show R is an equivalence relation. Further show that the set of points related to P ≠ (0,0) is the circle through P centred at the origin.
Answer: R is an equivalence relation; the class of P is the circle centred at O through P.
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