The avatar for @martien
Martien van Steenbergen
Wise Fool. Visioneer.
Public
Edited
Aug 7, 2023
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Fraction((2*4*5)/9)
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Fraction(2*1*2/3)
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HM(1,2)
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HM(4,5).mul(9,10)
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HM(8,9)
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HM = (n, d) => Fraction(2 * n * d / (n + d))
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Fraction(8,9).mul(9,10)
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Fraction(8,9).div(9,10) // syntonic comma
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Fraction(5,6).div(6,7)
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aap = (x) => Fraction(x, x+1).div(x+1, x+2)
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aap(8)
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// recreate table on page 1 of Terpstra-ArithmetricRubric.pdf
noot = d3.range(2,32,2)
.map(aap)
.map((r, i) => ({
s: `${i+1}:${i+2}`,
r: r.toFraction().replace("/",":"),
t: `8×${(i+1) * (i+2) / 2}:${r.d**(1/2)}²`,
f: `${(Math.ceil((i+1)/2))}`, // needs to be worked out more!!!
}))
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import {cent} from "@martien/cent"
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