How to show this series is divergent?

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    Divergent Series
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SUMMARY

The series in question is represented as \(\sum_{k=0}^\infty\dfrac{k!}{c^{2(k-1)}}\), where \(c\) is an arbitrary complex constant. To demonstrate that this series is divergent, the ratio test is recommended as an effective method. The factorial in the numerator suggests rapid growth, leading to divergence. The discussion confirms that applying the ratio test will yield conclusive results regarding the series' behavior.

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  • Knowledge of factorial growth rates
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KFC
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I got a series in the following form

[tex]\sum_{k=0}^\infty\dfrac{k!}{c^{2(k-1)}}[/tex]

where c is arbritary complex constant, how can I show this series is divergent?

Thanks
 
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You have a factorial on top. It looks fairly obvious to me.

If it's not obvious to you, try a ratio test.
 
Yep, ratio test.
 

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