What Are Ratio Test Examples and How Do Notations Affect Cancellations?

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SUMMARY

The discussion focuses on the Ratio Test in calculus, specifically addressing examples involving limits and cancellations in sequences. The user inquires about the notation used in expressions like (n^7) / (n+1)^7 and its simplification as n approaches infinity. It is established that the limit of the ratio simplifies to 1, indicating convergence. The conversation highlights the importance of understanding notation and behavior of functions in limit calculations.

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Students studying calculus, particularly those learning about series convergence and the Ratio Test, as well as educators looking for examples to illustrate these concepts.

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Homework Statement



I'm attached a pic of an example.

just wondering when i was trying the ratio test with a problem, i noticed numbers displayed in the pic.

is another way to write those examples like this: 5*5 or (x-1)*(x-1) ?

is that all the n+1 means?

also if there was something like: (n^7) / (n+1)^7 how can those cancel?
sorry about notation there.

thanks

Homework Equations





The Attempt at a Solution

 
Last edited:
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nevermind.
 
\frac{n^7}{(n+1)^7} behaves like \frac{n^7}{n^7} for large n

so in your example it's just 1 if the limit goes to infinity. Can you see it?
 

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