Answer
See explanation
Work Step by Step
In other words, those values cannot be used as inputs because they would make the function undefined or not make sense in the context. For example, in a function involving division, any input that makes the denominator zero would be excluded.
Therefore, when some input values are excluded, it means the function’s rule doesn’t work for those values, so they’re not in the domain — just like people without tickets can’t get into the show.
