Limit Calculation Help: x^3(ln(x))^2

  • Context: MHB 
  • Thread starter Thread starter Yankel
  • Start date Start date
  • Tags Tags
    Calculation Limit
Click For Summary
SUMMARY

The forum discussion focuses on calculating the limit of the expression \(\lim_{x\to 0^{+}}x^{3}\cdot (\ln(x))^{2}\). Participants recommend using L'Hôpital's rule to resolve the indeterminate form \(0\cdot\infty\) by rewriting the limit as \(\lim_{x\to0^{+}}\frac{\ln^2(x)}{x^{-3}}\), which transforms it into the \(\frac{\infty}{\infty}\) form suitable for L'Hôpital's application. This method allows for the calculation of the limit effectively.

PREREQUISITES
  • Understanding of limits in calculus
  • Familiarity with L'Hôpital's rule
  • Knowledge of logarithmic functions
  • Ability to manipulate indeterminate forms
NEXT STEPS
  • Study the application of L'Hôpital's rule in various limit problems
  • Explore the properties of logarithmic functions and their limits
  • Practice rewriting indeterminate forms for limit calculations
  • Learn about other techniques for evaluating limits, such as Taylor series
USEFUL FOR

Students and educators in calculus, mathematicians dealing with limits, and anyone seeking to deepen their understanding of L'Hôpital's rule and limit evaluation techniques.

Yankel
Messages
390
Reaction score
0
Hello

I need some help with this limit. I know I should use the L'hopital rule, but not sure how to do it...any help will be appreciated !

\lim_{x\to 0^{+}}x^{3}\cdot (ln(x))^{2}
 
Physics news on Phys.org
I notice this is the indeterminate form $0\cdot\infty$, so I would recommend writing it as:

$\displaystyle \lim_{x\to0^{+}}\frac{\ln^2(x)}{x^{-3}}$

Now we have the indeterminate form $\dfrac{\infty}{\infty}$ and we may apply L'Hôpital's rule.

Can you proceed?
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 8 ·
Replies
8
Views
3K