Can anyone please suggest a solution to the problem:
When n is large, the numerator is much larger than the demoninator, so the limit is 0, surely?
Are you sure? When n is small, the numerator is larger, but when n gets large, the denominator is actually larger.
EDIT: Next time, put a question like this in the 'Homework Questions' section. That's where it should be, and you'll also probably get a response faster that way.
My bad, got the names the wrong way round ;)
No worries, just didn't want to confuse the OP!
Separate names with a comma.