Help with a tricky limit please.

  • Thread starter Thread starter mtayab1994
  • Start date Start date
  • Tags Tags
    Limit
Click For Summary

Homework Help Overview

The problem involves finding the limit of a rational expression as \( x \) approaches -1, specifically \(\lim_{x\rightarrow-1}\frac{\sqrt{3-x}-x-3}{x+1}\). The subject area relates to calculus, particularly limits and algebraic manipulation.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • The original poster seeks guidance on solving the limit without using l'Hôpital's rule or Taylor series. Some participants suggest algebraic identities to simplify the expression, while others clarify the components of the identity being discussed.

Discussion Status

The discussion is ongoing, with participants exploring different algebraic approaches to tackle the limit. There is an acknowledgment of the original poster's constraints regarding solution methods, and some guidance has been offered regarding the use of algebraic identities.

Contextual Notes

The original poster explicitly requests not to use l'Hôpital's rule or Taylor series, indicating a preference for alternative methods of solving the limit.

mtayab1994
Messages
584
Reaction score
0

Homework Statement



Find the limit:

[tex]\lim_{x\rightarrow-1}\frac{\sqrt{3-x}-x-3}{x+1}[/tex]

The Attempt at a Solution



Any tips for solving a limit like this. I've never dealt with one like so can someone offer some help please.( Without using l'hospital's rule or taylor series.)
 
Last edited:
Physics news on Phys.org
Oh i apologize i did not read that you specified without l"hopital rule.

Try applying the identity [itex]A - B = \frac{A^2 - B^2}{A+B}[/itex] to the numerator.
 
yes but which on is A and which one is B.
 
A is [itex]\sqrt{3-x}[/itex] and B is [itex]x+3[/itex]
 
ok thank you.
 

Similar threads

Replies
4
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 5 ·
Replies
5
Views
1K
Replies
17
Views
3K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
Replies
4
Views
2K
Replies
7
Views
2K