Hi guys!

Ok, last problem today! I've already read any other posts on the sandwich principle, but I've never seen it before today, and my chapter doesn't explain it, just gives a question on it! If anyone could show me how this is done I would really appreciate it!

Let and be sequences with limits respectively, and suppose that, for all ,

Show that [This is sometimes called the sandwich principle. It can be useful if and are "known" sequences and is unknown. It is especially useful when , for in this case we conclude that .]

Nice explaination, if I did actually know what and were!In this case I don't know what to do, can anyone help please?