Negative Binomial SeriesWarningThis post is more than a year old. Information may be outdated.∑j=0∞(j+k−1k−1)aj=(1−a)−k if ∣a∣<1\sum\limits_{j=0}^{\infty} {{j+k-1} \choose {k-1}} a^j = (1-a)^{-k} ~\text{if}~ |a| < 1j=0∑∞(Backlinks1230202Comments
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