Hey anyone please can tell me this one:A=lim(e^(1/n*logn)) (n tends

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In summary, the conversation discusses a limit problem involving e^(1/(n*logn)) as n tends to 0. The speaker initially uses l'Hospital's rule to simplify the expression to lim(-1/n), but is unable to solve further. Another person provides an alternative solution using the fact that e^(1/(n*logn)) is equivalent to n^(1/n), which tends to 0 as n tends to 0. However, it is noted that the problem should have included parentheses for clarity.
  • #1
flash123
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hey anyone please can tell me this one:
A=lim(e^(1/n*logn)) (n tends to 0)
i took log on both sides and then by using l hospital rule
i arrive at lim(-1/n) (n tends to 0)
can't solve further...please help
 
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  • #2


flash123 said:
hey anyone please can tell me this one:
A=lim(e^(1/n*logn)) (n tends to 0)
i took log on both sides and then by using l hospital rule
i arrive at lim(-1/n) (n tends to 0)
can't solve further...please help



$$\lim_{x\to 0^+}\frac{\log x}{x}=-\infty\Longrightarrow \lim_{n\to 0}e^{\frac{\log n}{n}}=\lim_{x\to -\infty}e^x=0$$

Another way:

$$e^{\frac{\log n}{n}}=\left(e^{\log n}\right)^{1/n}=n^{1/n}\xrightarrow [n\to 0]{} 0$$

Of course, we assume in the above that [itex]\,n\,[/itex] is a continuous variable.

DonAntonio
 
  • #3


hey the problem is

e^(1/(n*logn)) log n is with n

log n is not in numerator
 
  • #4


flash123 said:
hey the problem is

e^(1/(n*logn)) log n is with n

log n is not in numerator


Yeat...too bad you didn't write parentheses in the OP to make that clear, uh?
 
  • #5


This belongs in the homework forum and should contain an effort from the OP. Locked.
 

Related to Hey anyone please can tell me this one:A=lim(e^(1/n*logn)) (n tends

1. What is the value of the limit A as n tends to infinity?

The limit A is equal to 1.

2. How do you solve this limit?

To solve this limit, we can use the properties of logarithms and exponential functions to simplify the expression and then apply the limit definition of e to the power of infinity, which is equal to 1.

3. What is the significance of the expression e^(1/n*logn)?

This expression is commonly used in calculus to evaluate limits involving exponential and logarithmic functions. It also has applications in other fields such as physics and engineering.

4. Can you explain the intuition behind the solution of this limit?

The intuition behind the solution is that as n tends to infinity, the value of logn increases at a slower rate compared to n. This means that the power of e decreases, approaching 1 as n gets larger and larger.

5. Are there any other methods to solve this limit?

Yes, there are other methods such as using l'Hopital's rule or using Taylor series expansion. However, the method of using the properties of logarithms and the limit definition of e is the most straightforward and efficient way to solve this limit.

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