Hi. I need help showing the work for the sum of the series (N)/(2^N) from N=1 to infinity. The answer is two, but I'm not quite sure how to go about it.
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Let x = .
Hello, SnowWhite! Another approach . . . Find: . We have: . . . . . Multiply by Subtract: . . . . Therefore: .
Thank you both so much!
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