Lower Bound Iterated Integral | MATH200

  • Context: Undergrad 
  • Thread starter Thread starter BondKing
  • Start date Start date
  • Tags Tags
    Integral
Click For Summary

Discussion Overview

The discussion revolves around finding the lower bound for an iterated integral, specifically focusing on the equation of a line that defines this bound. Participants are exploring the correct representation of the line and its implications for the integral's evaluation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant presents the equation y = (-5/4)x + 5 as a candidate for the lower bound but expresses uncertainty about its validity.
  • Another participant questions the assertion that the equation does not work, suggesting it is indeed the equation of the lower line.
  • Confusion arises regarding the correctness of the slope, with one participant suggesting that -1.25 might be the correct slope instead of -5/4.
  • There is a claim that the corner point should be at (2, 2) rather than (2, 2.5), leading to a different line equation, y = -x + 4.
  • Participants discuss whether the issue lies in the final value of the integral or if there is a need for a multiplication sign in the equation.

Areas of Agreement / Disagreement

Participants express differing views on the correct equation for the lower bound, with no consensus reached on the appropriate slope or corner point. The discussion remains unresolved regarding the correct representation of the line.

Contextual Notes

There are limitations in the assumptions made about the corner points and the applicability of the line equations, which may affect the evaluation of the integral.

BondKing
Messages
13
Reaction score
0
https://webwork.elearning.ubc.ca/webwork2_files/tmp/MATH200-ALL_2014W1//gif/G7FDHYKMT809-3725-setAssignment9prob2image1.png

How can I find the lower bound for an iterated integral in this case?

My attempt:

y = (-5/4)x+5 (which represents the line)

But it doesn't work.
 
Last edited by a moderator:
Physics news on Phys.org
Why do you say it doesn't work? That is the equation of the lower line.
 
I am confused too. = (
an_zps5ad1ce20.jpg

only c is wrong.
 
but y = (-5/4)x+5 is only applicable till y = 2.5 though.
 
Maybe they're looking for -1.25 for the slope instead of -5/4.
 
Mark44 said:
Maybe they're looking for -1.25 for the slope instead of -5/4.

Tried both ways. = (
 
It looks to me like that one corner point is at (2, 2), not (2, 2.5). That would make the equation of the line y = -x + 4.
 
  • Like
Likes   Reactions: BondKing
What tells you that it is wrong? Is the final value of the integral wrong or do you get an error message? Do you need a multiplication sign (-5/4)*x+5?
 
Mark44 said:
It looks to me like that one corner point is at (2, 2), not (2, 2.5). That would make the equation of the line y = -x + 4.

thanks bro
 

Similar threads

  • · Replies 27 ·
Replies
27
Views
5K
  • · Replies 20 ·
Replies
20
Views
4K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 31 ·
2
Replies
31
Views
5K
  • · Replies 23 ·
Replies
23
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
5
Views
2K
  • · Replies 10 ·
Replies
10
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K