10^(1/10) is VERY close to 2^(1/3)

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Discussion Overview

The discussion centers around the numerical approximation of \(10^{1/10}\) and \(2^{1/3}\), exploring whether there is a deeper reason for their proximity and the implications of using one in place of the other in certain contexts. The scope includes numerical analysis and conceptual reasoning.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions if there is a reason behind the closeness of \(10^{1/10}\) and \(2^{1/3}\), suggesting it might be more than coincidence.
  • Another participant provides a numerical comparison, noting that \(2^{10} = 1024\) and approximating \(\sqrt[3]{1024} \approx 10\).
  • A later reply expresses realization and gratitude for the clarification provided by the previous post.
  • Another participant argues that \(10^{1/10}\) is not very close to \(2^{1/3}\), providing specific numerical values (~1.2599 for \(10^{1/10}\) and ~1.2589 for \(2^{1/3}\)) and suggesting that rounding may create a misleading impression of their proximity.

Areas of Agreement / Disagreement

Participants express differing views on the significance of the closeness of \(10^{1/10}\) and \(2^{1/3}\). While some find it interesting, others argue that it is not particularly close, indicating a lack of consensus.

Contextual Notes

The discussion highlights the potential for misinterpretation when rounding numbers and the importance of precise values in mathematical comparisons. There is also an acknowledgment of the context in which these approximations might be deemed acceptable.

Juanda
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Is there a subjacent reason that explains why these two numbers are so close?
$$10^{1/10} \approx 2^{1/3}$$

For context, this is where I found out about this.
Source: https://www.instarengineering.com/p...ration_Testing_of_Small_Satellites_Part_5.pdf
1708777676533.png


Is it just a coincidence? I tried factoring the numbers but it doesn't provide any additional information. From the infinite number of possibilities, how did they realize that ##10^{1/10} \approx 2^{1/3}## are so close together that it is acceptable to use the ##2^{1/3}## without losing too much accuracy?
 
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##2^{10}=1024, \sqrt[3] {1024} \approx 10##
 
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Likes   Reactions: DrClaude, berkeman, FactChecker and 3 others
How did I not see it? 🤦‍♂️
Thank you. It's clear now.
 
Juanda said:
Is it just a coincidence?
Pretty much -- ##10^{1/10}## is not all that close to ##2^{1/3}##.
The first is ~1.2599, and the second is ~1.2589. Rounding to 3 decimal places gives 1.260 vs. 1.259. I guess these are close if you consider ##\sqrt 2 \approx 1.4## as they did in the quoted article.
 

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