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let-put-w-e-i-2pi-n-find-k-1-n-x-w-k-n-2-find-k-1-n-n-x-w-k-n-1-




Question Number 30501 by abdo imad last updated on 22/Feb/18
let put w=e^(i((2π)/n))      find  Σ_(k=1) ^n  (x+w^k )^n   2) find  Σ_(k=1) ^n n(x+w^k )^(n−1)   .
letputw=ei2πnfindk=1n(x+wk)n2)findk=1nn(x+wk)n1.

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