If R= {(x, y); x, y ∈ z, x² + y² ≤ 4} is a relation in set Z, then domain of R is
A. {0, 1, 2}
B. {-2, -1, 0, 1, 2}
C. {0, -1, -2}
D. {-1, 0, 1}
Answer:B
If R= {(x, y); x, y ∈ z, x² + y² ≤ 4} is a relation in set Z, then domain of R is
A. {0, 1, 2} B. {-2, -1, 0, 1, 2} C. {0, -1, -2} D. {-1, 0, 1}