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Question Number 141640 by Willson last updated on 21/May/21
Answered by qaz last updated on 22/May/21
∑∞k=0116k(8k+n)=∑∞k=0116k∫01x8k+n−1dx=∫01xn−1∑∞k=0x8k16kdx=∫01xn−11−x816dx=16∫01xn−116−x8dx=162∫01/2(2x)n−116−(2x)8dx=(2)n∫01/2xn−11−x8dx
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