Uncertainty in measurements and epsilon delta definition of a limit

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Discussion Overview

The discussion explores the relationship between the epsilon-delta definition of a limit and uncertainty in measurements, particularly in the context of measuring time and its effect on velocity calculations.

Discussion Character

  • Conceptual clarification, Technical explanation

Main Points Raised

  • One participant questions whether the epsilon-delta definition of limits relates to measurement uncertainty, suggesting that an error in time measurement could affect the calculated velocity.
  • Another participant asserts that the concepts are unrelated and recommends using elementary calculus to address the issue, specifically mentioning the use of derivatives to approximate error in velocity based on time error.
  • A later reply confirms that the approach discussed involves linear approximation.

Areas of Agreement / Disagreement

Participants do not appear to agree on the relationship between the epsilon-delta definition and measurement uncertainty, with one participant asserting they are unrelated while another suggests a connection.

Contextual Notes

The discussion does not resolve the implications of using derivatives for error approximation or the applicability of the epsilon-delta definition in this context.

madah12
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does the epsilon delta definition of the limit connect to the uncertainty in measurements like this? like if we measure a quantity time with value a with error of + or - delta then my formula will give me v with value L +or - epsilon or is it unrelated?
 
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It is unrelated. The simplest mathematical approach to what you are trying to do is use elementary calculus. Specifically if you know the relationship between v and t (time), you can compute dv/dt at t=a and the v error will be approximated by this derivative times the t error.
 
oh I see it's linear approximation right?
 
madah12 said:
oh I see it's linear approximation right?

Yes.
 

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