Solving Majorization of Series: Find Geometric Series^

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SUMMARY

The discussion focuses on finding a geometric series that majorizes the series defined by the summation \(\sum_{n=5}^{\infty} \frac{n^{2}}{n!}\). The term "majorize" is clarified as identifying a series \(\sum b_n\) where each term \(b_n\) is greater than or equal to the corresponding term \(a_n\) from the original series. The solution involves determining a geometric series of the form \(b_n = br^n\) that satisfies this condition.

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Homework Statement



Find a geometric series that majorizes the series


^{\infty}_{5}\Sigma\frac{n^{2}}{n!}

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The Attempt at a Solution



Can someone explain to me what this questions actually means and how I would go about doing it?
 
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I think that "majorize" means "find a series such that every term is larger than the corresponding term in the given series". In other words, if you are given series \sum a_n you want to find a series, \sum b_n, such that a_n\le b_n. And, of course, here you want [math]b_n= br^n[/math] so it is a geometic series.
 

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