Find ∑r=1(ar+b) ωr-1 if ω is a complex nth root of unity.

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answerhappygod
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Find ∑r=1(ar+b) ωr-1 if ω is a complex nth root of unity.

Post by answerhappygod »

a) n(n+1)a/2
b) nb/(1-n)
c) na/(ω-1)
d) n(n+1)a/(ω-1)
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