R = {(x, y) / x, y ϵ I, x^2 + y^2 ≤ 4} is a relation in I then domain of R is (1) {0,1,2} (2) {-2,-1,0} (3) {-2,-1,0,1,2} (4) {-2,-1}

Solution: (3)

The values of x becomes 0, ± 1, ± 2…..

Domain of R = {0, ± 1, ± 2…..}

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