Let S=∑∞n=0nαn where α – InterviewSolution

1.	Let S=∑∞n=0nαn where α
Answer» Let $S = \sum_{n = 0}^{\infty} n α^{n}$ where $α$ <1. The value of $α$ in the range $0 < α < 1$ , such that S=2\alpha\) is

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