Let R = {(x, x + 5): x ϵ {9, 1, 2, 3, 4, 5}}.
(i)Write R in roster form.
(ii)Find dom (R) and range (R).

Answer : Given: R = {(x, x + 5): x ϵ {9, 1, 2, 3, 4, 5}}

(i) R is Foster Form is,

R = {(9, 14), (1, 6), (2, 7), (3, 8), (4, 9), (5, 10)}

(ii) Dom(R) = {1, 2, 3, 4, 5, 9}

Range(R) = {6, 7, 8, 9, 10, 14}