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Re: [OT] math fulguration

by duelafn (Parson)
on Apr 07, 2021 at 12:22 UTC ( #11130947=note: print w/replies, xml ) Need Help??


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

Replies are listed 'Best First'.
Re^2: [OT] math fulguration
by salva (Canon) on Apr 07, 2021 at 12:55 UTC
Re^2: [OT] math fulguration
by jo37 (Hermit) on Apr 07, 2021 at 17:06 UTC
    though they meant geometric series

    Maybe that has a cultural aspect. Here in Germany the equation x - y = (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$

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