BtaylorTheRogue August 23, 2013 at 2:55 pm I could be wrong, but aren’t 0, 0-, and 0+ completely different things? This is exactly how my pre-calcIII professor taught us to do limits.

Vaughn October 4, 2013 at 11:36 am lim x->0 only exists if lim x->0- and lim x->0+ exist and are equal. But if 0- and 0+ are equal then 0 is the same.

BtaylorTheRogueI could be wrong, but aren’t 0, 0-, and 0+ completely different things?

This is exactly how my pre-calcIII professor taught us to do limits.

Vaughnlim x->0 only exists if lim x->0- and lim x->0+ exist and are equal. But if 0- and 0+ are equal then 0 is the same.