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  • Need solution for RD Sharma maths class 12 chapter Functions exercise 2 1 question 21 sub question ii

Need solution for RD Sharma maths class 12 chapter Functions exercise 2.1 question 21 sub question (ii)

Answers (1)

f=(2,2),(5,3),(6,4),(7,4)

Given:

Here given that

             A= \left \{ 2,3,4 \right \}   and   A= \left \{ 2,5,6,7 \right \}

Here we have to construct an example as the mapping from A to B which is not injective.

Hint:

In this question we construct an example of many one function.

Solution:

Here    A= \left \{ 2,3,4 \right \}   and   A= \left \{ 2,5,6,7 \right \}

Hence we have

g=(2,2),(3,5),(4,2)

It is many-one.

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