$ \displaystyle \sum_{k=0}^n ar^k =\cfrac{ar^{n+1}-a}{r-1} $
Is there a similar formula for
$ \displaystyle \sum_{k=0}^n ar^{k^2} $
2026-03-26 16:12:27.1774541547
Closed form of geometric series
51 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in SUMMATION
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