What part of this actually proves the limit? I follow everything, but I am unsure about the implications of how the last line proves that the limit exists. Is this because it has been shown that given any value of epsilon, delta will be less than one quarter of epsilon?
The proof lies in the fact that , and we found in the problem that
To find out more about proofs, look at this thread: http://www.mathhelpforum.com/math-he...ta-proofs.html