is a relation in then domain of is:
Explanation for the correct option:
Finding the domain of :
Given relation
Now,
It is nothing but equation of circle having Centre and radius .
Therefore, the integers in the interval are the appropriate values of
When we put we get which lies inside
When we put we get which lies inside
When we put we get which lies inside
Thus, the domain of is which is
Hence, the correct answer is option (C).