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MATHEMATICS Convergent sequence

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Exercise 84: Calculate the limit .

Solution:
Please, note that

We use the theorem:

Theorem:
If  for a sequence we have ,
where q >1 and  an > 0 for n =1, 2,... ,  then .
We get

 

Using the definition of  n! = n * (n-1) * (n-2) * ... * 2 * 1, so n! = n * (n-1)!, and using the definition of the number e                () . We get

 

Therefore

Using the theorem, we get

 

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