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If A={1,4,8,9} and B={1, 2, -1, -2, -3, 3,5} and R is a relation from set A to set B {(x, y): x=y^2}. Find domain of the relation.(a) {1,4,9}(b) {-1,1, -2,2, -3,3}(c) {1,4,8,9}(d) {-1,1, -2,2, -3,3,5}I have been asked this question during an online exam.My query is from Relations topic in section Relations and Functions of Mathematics – Class 11

Answer»

Right answer is (c) {1,4,8,9}

The best I can explain: We know, DOMAIN of a relation is the SET from which relation is DEFINED i.e. set A.

So, domain = {1,4,8,9}.



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