let-z-from-C-and-from-R-and-z-2-2zcos-1-0-find-the-value-of-z-2n-2zcos-n-1-

Tinku Tara June 4, 2023 Algebra 0 Comments

Question Number 49242 by maxmathsup by imad last updated on 04/Dec/18

let z from C and θ from R and z^2 +2zcosθ +1 =0 find the value of z^(2n) +2zcos(nθ)+1 .

$${let}\:{z}\:{from}\:{C}\:{and}\:\theta\:{from}\:{R}\:{and}\:{z}^{\mathrm{2}} \:+\mathrm{2}{zcos}\theta\:+\mathrm{1}\:=\mathrm{0}\:{find}\:{the}\:{value}\:{of} \\ $$$${z}^{\mathrm{2}{n}} \:+\mathrm{2}{zcos}\left({n}\theta\right)+\mathrm{1}\:. \\ $$$$ \\ $$

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let-z-from-C-and-from-R-and-z-2-2zcos-1-0-find-the-value-of-z-2n-2zcos-n-1-

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