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edited title

edited Jan 6, 2018 at 10:05

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Lower/Upper bounds for $ \sum\limits_{i=0}^k \binom ni x^i $

Are there good lower/upper bounds for $ \sum\limits_{i = 0}^k {\left( \begin{array}{l} n \\ i \\ \end{array} \right)x^i } $ where $0<x<1$, $k<<n$?

co.combinatorics sequences-and-series

asked Jan 6, 2018 at 9:18

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