Let $0<c<1$. I need to bound $$ \sum_{i=1}^n \frac{c^{n-i}}{i}\leq C n^{-?} $$
for some constant $C>0$. Does anyone know how to optimal bound this sum? Thank you very much for any suggestions.
2026-03-26 08:10:50.1774512650
Bounding an exponential row
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