The sum of series 1-1+1-1+1…

At a glance we can say that the sime may be just 1, or 0. Or we can say that there is no one finite sum. Well there is a way.

given s = 1-1+1-1+1...
let’s do; 1-s we’ll have 1-s = 1-(1-1+1-1+1...)
1-s=1-(1-1+1-1+1...)
1-s = 1-1+1-1+1...
there fore
1-s = s
s = 1/2

This is the final answer for sum of this series