Question Number 102745 by Dwaipayan Shikari last updated on 10/Jul/20

1−1+1−1+1−1+1−1+.....=(1/2)   {But it diverges  1+1+1+1+1+1+1+......=−(1/2)      {But it diverges  1+2+4+8+16+.....=−1                   {But it diverges  1+2+3+4+5+6+7=−(1/(12))                {But it diverges  1−2+4−8+.....=(1/3)                           {But it diverges  1−2+3−4+5−6+.....=(1/4)       {Is it a divergent?????

Commented byDwaipayan Shikari last updated on 10/Jul/20

Funny great sequences

Commented byprakash jain last updated on 10/Jul/20

See the link below to get an idea behind theory for calculating these sum of divergent series. https://en.m.wikipedia.org/wiki/Analytic_continuation also this link given some additional info about other summation methods https://en.m.wikipedia.org/wiki/Divergent_series