Prove that the series starting with has its maximum at , therefore afterwords it strictly decreasing. (I know that .)

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- Jan 26th 2009, 10:36 AM #1

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- Jan 26th 2009, 10:40 AM #2

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- Jan 26th 2009, 10:41 AM #3

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- Jan 26th 2009, 10:59 AM #7