Question Error? (epsilon-delta proof of a limit)

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Homework Help Overview

The discussion revolves around an epsilon-delta proof of a limit, focusing on potential errors in mathematical expressions and logical steps involved in the proof.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants express uncertainty about the correctness of signs in the mathematical expressions. There are inquiries about specific absolute value calculations and suggestions to simplify and factor expressions. Some participants point out potential errors in the order of steps and the absence of implication signs.

Discussion Status

The discussion is active, with participants questioning the validity of the current approach and offering suggestions for clarification and correction. There is no explicit consensus yet, but various aspects of the proof are being examined.

Contextual Notes

Participants are addressing specific mathematical details and logical structures within the proof, indicating a need for careful verification of each step. The nature of the homework context may impose certain constraints on how solutions can be approached.

Mustard
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Homework Statement
look at snippet
Relevant Equations
look at snippet
I can not follow this mathematically. I am guessing one of the signs is incorrect?
Can anyone verify ?
 

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What is ##|(\frac{3}{4}x + 1) - 7|##?
 
etotheipi said:
What is ##|(\frac{3}{4}x + 1) - 7|##?
@Mustard, after you simplify the above, factor out 3/4 from both terms inside the absolute value signs.
 
There is one error in the question: the steps are in reverse order.
 
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The implication signs are missing: ##\Leftarrow## or ##\Leftrightarrow## would do.
 

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