7.4.3 Let X = {1,2,3}. Define the relation R = {(1, 1), (1,2), (1,3), (2, 1), (2, 2), (3, 1), (3,3)} on X. (a) Which of the properties reflexive, symmetric, transitive are satisfied by R? (b) Compute the sets A₁, A2, A3 where A₁ = {x € X: x Rn}. Show that {A1, A2, A3} do not form a partition of X. (c) Repeat parts (a) and (b) for the relations S and T on X, where S = {(1,1), (1,3), (3,1), (3,3)} T = {(1, 1), (1,2), (1,3), (2, 1), (2, 2), (2,3), (3,3)} Some of the sets A1, A2, A3 might be the same in each of your examples. If, for example, A1 = A3, then the collection {A₁, A2, A3} only contains two sets: {A₁, A2}. Is this a partition? Compare with the example on page 149

Advanced Engineering Mathematics
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ISBN:9780470458365
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Chapter2: Second-order Linear Odes
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7.4.3 Let X = {1,2,3}. Define the relation R = {(1, 1), (1,2), (1,3), (2, 1), (2, 2), (3, 1), (3,3)} on X.
(a) Which of the properties reflexive, symmetric, transitive are satisfied by R?
(b) Compute the sets A1, A2, A3 where A₁ = {xEX: xRn}. Show that {A1, A2, A3} do not
form a partition of X.
(c) Repeat parts (a) and (b) for the relations S and T on X, where
S = {(1, 1), (1,3), (3, 1), (3,3)}
T = {(1, 1), (1,2), (1,3), (2, 1), (2, 2), (2,3), (3,3)}
Some of the sets A1, A2, A3 might be the same in each of your examples. If, for example, A1 = A3, then
the collection {A₁, A2, A3} only contains two sets: {A₁, A2}. Is this a partition? Compare with the
example on page 149
Transcribed Image Text:2 7.4.3 Let X = {1,2,3}. Define the relation R = {(1, 1), (1,2), (1,3), (2, 1), (2, 2), (3, 1), (3,3)} on X. (a) Which of the properties reflexive, symmetric, transitive are satisfied by R? (b) Compute the sets A1, A2, A3 where A₁ = {xEX: xRn}. Show that {A1, A2, A3} do not form a partition of X. (c) Repeat parts (a) and (b) for the relations S and T on X, where S = {(1, 1), (1,3), (3, 1), (3,3)} T = {(1, 1), (1,2), (1,3), (2, 1), (2, 2), (2,3), (3,3)} Some of the sets A1, A2, A3 might be the same in each of your examples. If, for example, A1 = A3, then the collection {A₁, A2, A3} only contains two sets: {A₁, A2}. Is this a partition? Compare with the example on page 149
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