(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known dataIf z is a non-real complex number such that z+1/z=2costheta, prove that z^n+1/z^n=2cosntheta for any posistive integer n

2. Relevant equations

I think the process of induction would work, but im not quite sure how to do that with all of the unknowns, would i just treat costheta as a constant number

3. The attempt at a solution

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# Homework Help: Complex numbers and induction

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