what is S10 for the series -5+10-20+40...
I tried the forluma you showed me but my calculator says error
oh please
r = -2
S10 = -5 ((-2)^10 - 1)/(-2-1) = -5(1023)/(-3) = 1705
I tried the forluma you showed me but my calculator says error
r = -2
S10 = -5 ((-2)^10 - 1)/(-2-1) = -5(1023)/(-3) = 1705