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Topic: Egypttian and Greek sqare root
Replies: 9   Last Post: Dec 13, 2012 8:17 PM

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Milo Gardner

Posts: 1,105
Registered: 12/3/04
Re: Egypttian and Greek sqare root
Posted: Nov 30, 2012 6:22 PM
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It should be stressed that the scribal method for taking the 200 BCE square root of 164 began that estimated

(12 + 4/5)^2 , a step that was short by E1 = 4/25

A second step added a unit fraction term that required the scribe to scale 4/5 by 24/24 such that:

4/5(24/24) = 96/120 = (80 +8 + 5 + 3)/120 = 2/3 + 1/15 + 1/24 + 1/40

The scribal step replaced 1/40 by 1/32 and thereby eliminated the E1 shortfall ... BUT added a smaller irrational error E2 = (1/160)^2



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