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  • I need help with - Sets, Relations and Functions - JEE Main-7

What is the domain of the relation ?

\left \{(a,b) / where \; b \in \mathbb Z \; and \; a = \frac{b}{2}\right \}

  • Option 1)

    R

  • Option 2)

    Z

  • Option 3)

    N

  • Option 4)

    W

 

Answers (1)

best_answer

As we have learnt,

 

DOMAIN -

The domain of R is the set of all first elements of the ordered pairs in a relation R.

- wherein

eg. R={(a,b),(c,d)}, then domain is {a,c}

 

 Since a = \frac{b}{}2 and b \in \mathbb Z, a is also in \mathbb Z.

 


Option 1)

R

Option 2)

Z

Option 3)

N

Option 4)

W

Posted by

Himanshu

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