# Math Help - Help on epsilon delta proof of integral

2. ## Re: Help on epsilon delta proof of integral

Have you at least tried drawing a picture for this situation?

3. ## Re: Help on epsilon delta proof of integral

Hi,
Hints:
First prove the result in case f and g differ at only one point. Then an easy induction finishes it.
Next prove that the function h which is non-zero at only one point of [a,b] is Riemann integrable, with integral 0.
Finally, set h=g-f where g and f differ at only one point.

The only part that requires "epsilon delta" is the 2nd line.