(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

determine the number of roots, counting multiplicities, of the equation z^7-5*z^3+12=0

in side the annulus 1<=|z|<2

2. Relevant equationsuse rouche's theorem

3. The attempt at a solution

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# Homework Help: Finding number of roots of a complex equation using rouche's theorem

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