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CBSE Class 12-science Answered

Let R be a relation from N-N.Is it necessary that that all the elements of the domain should have an image?
Asked by Rohan Mehra | 21 Apr, 2011, 11:27: PM
answered-by-expert Expert Answer

Yes, it is necesary that all elements of domain have a image.

 For eg. if you define a relationship in a roster form and in a circumstance if there is no image for a particular domain the value will be null which is not possible.
Answered by | 22 Apr, 2011, 08:57: AM
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