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Question Number 43894 by Rauny last updated on 17/Sep/18

∣ z ∣=∣ A r g (\frac{a}{b} π) ∣= 1 \land k, n \in Z \land b \neq 0 ⩽ k < n :

x^{n} = z \Rightarrow x = e^{\frac{2 k + a}{b m} π i}

To prove that, please .