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Question Number 218280 by vahid last updated on 04/Apr/25

Answered by Frix last updated on 05/Apr/25

$${\mathrm{i}}^{4n}=1$$$${\mathrm{i}}^{4n+1}=\mathrm{i}$$$${\mathrm{i}}^{4n+2}=-1$$$${\mathrm{i}}^{4n+3}=-\mathrm{i}$$$$\Rightarrow \mathrm{answer}\mathrm{is}1-2\mathrm{i}$$

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