Does this still mean the set is not closed? Thanks
You don't understand because you don't know what it means for a set to be closed. Do you? How do you expect to work any problem if you don't understand the underlying definitions?
You don't understand because you don't know what it means for a set to be closed. Do you? How do you expect to work any problem if you don't understand the underlying definitions?
Definition: If S is a subset of an n.l.s, we say S is a closed set if for every