> You think it's possible for a bucket to contain a negative amount of water? Irrelevant, the discontinuity occurs at 0 not a negative number. The limit of f(

> You think it's possible for a bucket to contain a negative amount of water? Irrelevant, the discontinuity occurs at 0 not a negative number. The limit of f(X) = (X-2)/(X-2) as X approaches 2 is 1, that doesn’t mean the function has a defined value at 2. Limits seem easy because most students really don’t understand limits and thus misuse them.