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

  • #1
Juanda
Gold Member
426
150
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?
 
Mathematics news on Phys.org
  • #2
##2^{10}=1024, \sqrt[3] {1024} \approx 10##
 
  • Like
  • Informative
Likes DrClaude, berkeman, FactChecker and 3 others
  • #3
How did I not see it? 🤦‍♂️
Thank you. It's clear now.
 
  • #4
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.
 
Back
Top