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Cheyanne Salas
Mathematics
30 April, 19:18
When is a relation a function
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Dillon Ruiz
30 April, 19:20
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A relation from a set X to a set Y is called a function if each element of X is related to exactly one element in Y. That is, given an element x in X, there is only one element in Y that x is related to. For example, consider the following sets X and Y.
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