Limits in 0/0 Calculus I Problem

  • Thread starter Thread starter RaptorsFan
  • Start date Start date
  • Tags Tags
    Limits
Click For Summary

Homework Help Overview

The discussion revolves around a limit problem in Calculus I, specifically dealing with the indeterminate form 0/0. The original poster expresses confusion regarding the evaluation of the limit of the function 1/x(1/(x+2)^2 -1/4) as x approaches 0.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts various algebraic manipulations, including foiling, cancelling, and using the difference of squares, but reports limited success. They also inquire about the potential use of the Squeeze theorem or L'Hôpital's rule as alternative methods.

Discussion Status

Some participants have engaged by asking for clarification on the original poster's algebraic attempts, suggesting that there may be a viable approach that has not yet been fully explored. Others have noted their own experiences with the problem, indicating a mix of interpretations and methods being discussed.

Contextual Notes

The original poster is in the early stages of Calculus I and is working through foundational concepts, which may influence their approach to the problem. There is an indication of multiple attempts leading to confusion, as well as a mention of sign errors and simplification challenges.

RaptorsFan
Messages
12
Reaction score
0

Homework Statement



I'm in the early stages of Calculus I.. just doing the basics you learn in the Calc prep course.
This one problem is really getting me confused.


Homework Equations



Lim -> 0 in the function 1/x(1/(x+2)^2 -1/4)

The Attempt at a Solution



I've tried foiling and cancelling, it hasn't worked.
I've tried a^2 - b^2 formula to cancel, that hasn't worked either
Tried using a conjugate without a root and that doesn't work
Would this be a case where 'The Squeeze' method would be necessary? Or is there a better way.. Thanks in advance
 
Physics news on Phys.org
You better show us your attempt at doing some algebra and cancelling the x. Because it works for me.
 
After about 10 attempts later and numerous sign errors and not simplifying stuff enough i finally got an answer of -1/4.. Thanks anyway guys!
 
Can try L'Hopital rule?
 
Lim -> 0 in the function 1/x(1/(x+2)^2 -1/4)

Do you mean this?

\lim_{x\to 0}\frac{1}{x} (\frac{1}{(x+2)^{2}} - \frac{1}{4})
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 19 ·
Replies
19
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
2
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 15 ·
Replies
15
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K