Mapping

Related Words

Definition of Mapping

The idea of pairing each member of the domain with each member of the range referred to as mapping.

Examples of Mapping

    The figure shows a mapping of the elements of the domain to the elements of the range. Each element in the domain is increased by 1 to get the corresponding element in the range.
     example of  Mapping

Video Examples: JEE Math-Mapping


Solved Example on Mapping

Ques: Use the mapping diagram for the relation and determine whether {(3, - 1), (6, - 1),(3, - 2),(6, - 2)} is a function or not.

    Choices:
    A. Yes
    B. No
    Correct Answer: B

Solution:

    Step 1: Draw the mapping diagram for the given relation.
     example of  Mapping
    Step 2: A relation is a function if each element in the domain is paired with one and only one element in the range.
    Step 3: From the mapping diagram, it can be observed that the given relation is not a function as '3' in the domain is paired with two elements - 1 and - 2 in the range and '6' is paired with - 1 and - 2.
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