This relation is both total and many-to-one, and so it is a function from X to Y. The function can be given explicitly as f = {(1, a), (2, d), (3, c)} or as
This relation is both total and many-to-one, and so it is a function from X to Y. The function can be given explicitly as f = {(1, a), (2, d), (3, c)} or as
user
Така відповідність є всюди визначеною та функціональною, тобто функцією з X в Y. Безпосередньо цю функцію можна задати множиною: f = {(1, d), (2, d), (3, c)} або умовним переліком:
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