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Question
Write the relation in the Roster Form. State its domain and range
R8 = {(a, b)/b = a + 2, a ∈ z, 0 < a < 5}
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Solution
R8 = {(a, b)/b = a + 2, a ∈ z, 0 < a < 5}
Here, b = a + 2
When a = 1, b = 3
When a = 2, b = 4
When a = 3, b = 5
When a = 4, b = 6
R8 = {(1, 3), (2, 4), (3, 5), (4, 6)}
Domain of R8 = {1, 2, 3, 4}
Range of R8 = {3, 4, 5, 6}
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