Re: [OT] math fulguration

in reply to [OT] math fulguration

Yes, as jo37 said, it is known, though they meant geometric series – the binomial formula would have binomial coefficients.

Note: The wikipedia formula is a more general form and written a different way. Divide out the "a" then note that (1-xⁿ)/(1-x) = (xⁿ-1)/(x-1). Then solve for xⁿ.

Good Day,
Dean

Comment on Re: [OT] math fulguration

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Re^2: [OT] math fulguration by salva (Canon) on Apr 07, 2021 at 12:55 UTC
Another generalization is this one!	[reply]
Re^2: [OT] math fulguration by jo37 (Deacon) on Apr 07, 2021 at 17:06 UTC
though they meant geometric series Maybe that has a cultural aspect. Here in Germany the equation `x² - y² = (x - y)(x + y)` is known as the "third binomial formula" with a generalization to the n-th power as cited. Greetings, -jo `$gryYup$d0ylprbpriprrYpkJl2xyl~rzg??P~5lp2hyl0p$`	[reply] [d/l]

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