Is Sequence xn Unbounded? Quickest Solution

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SUMMARY

The sequence \( x_n = \frac{(n^5 + 7n + 3)^7}{(7 - n^4)^6} \) is unbounded as \( n \) approaches infinity. The key factor determining this is the degree of the polynomial in the numerator, which is 35, compared to the degree in the denominator, which is 24. Since the degree of the numerator exceeds that of the denominator, \( x_n \) tends to infinity, confirming that the sequence is not bounded.

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Homework Statement


Is the sequence xn=[(n5+7n+3)7]/[(7-n4)6] bounded?


]



The Attempt at a Solution



I've managed to tell that the sequence is not bound because as n tends to ∞ xn also tends to ∞ but it took me a relatively long time.
Is there any way of telling this by just looking at the exponents or what is the quickiest way to tell that this sequence will get infinitely large.
 
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gottfried said:

Homework Statement


Is the sequence xn=[(n5+7n+3)7]/[(7-n4)6] bounded?


]



The Attempt at a Solution



I've managed to tell that the sequence is not bound because as n tends to ∞ xn also tends to ∞ but it took me a relatively long time.
Is there any way of telling this by just looking at the exponents or what is the quickiest way to tell that this sequence will get infinitely large.

The highest degree of n in the numerator is 35 and in the denominator is 24. That's all you need to know.
 
I was pretty sure it was something simple. Thanks!
 

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