Let A = {2, 4} and B = {1, 3, 5} and define relations U, V, and W from A to B as follows: For all (x, y)∈ A × B,
(x, y)∈ U means that y –x > 2.
(x, y)∈ V means that
W = {(2, 5),(4, 1),(2, 3)}.
a. Draw arrow diagrams for U, V, and W.
b. Indicate whether any of the relations U, V, and W are functions.
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