For a functionThat may be quite a bit to swallow all at once. You might want to shake those epsilons and deltas from your head and take a step back. The limit is concerned with whatf(x),## if and only if for each positive number

## (the lowercase Greek ``epsilon"), there exists a positive number

## (the lowercase Greek letter "delta") with the property that

One of the important things is that nowhere is the formal definition
mention *anything* about the actual value of `f`(`x`)
at `x` = `a`. The value of
`f`(`a`) does not affect the limit, and may not even
be defined.

watko@mit.edu Last modified August 19, 1998