InterviewSolution
Saved Bookmarks
| 1. |
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 range 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 in a job interview.The doubt is from Relations topic in section Relations and Functions of Mathematics – Class 11 |
|
Answer» RIGHT option is (b) {-1,1, -2,2, -3,3} For EXPLANATION: RANGE is the set of ELEMENTS of codomain which have their PREIMAGE in domain. Relation R = {(1,1), (1, -1), (4,2), (4, -2), (9,3), (9, -3)}. Range = {-1,1, -2,2, -3,3}. |
|