3 ms·
1 − 2 + 3 − 4 + · · · = 1/4
- makecheck 15y agoIt may be better to look at a series in general: http://en.wikipedia.org/wiki/Convergent_series http://en.wikipedia.org/wiki/Convergent_series http://en.wikipedia.org/wiki/Divergent_series http://en.wikipedia.org/wiki/Divergent_series In particular there are many interesting sums on the convergent series page.