Approching limits?

Question

What side do you approch a limit if it is negative or positive?

Answer 1

Are you asking about one-sided limits?

e.g.
(lim x -> 0+) (1/x) = oo
(lim x -> 0-) (1/x) = -oo

I'm assuming you want to know which side the + indicates you approach from. The + indicates you approach from the right, whereas a - would indicate you approach from the left.

Am I right? Is this what you were wondering?

Also: It's important to note that this is not a "negative limit" or a "positive limit" -- we just use the + and - as notation to indicate which direction the limit approaches from.

Answer 2

Both sides. If the limit is different depending on which side you approach from, then there is no limit.