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

Express (see attachment) with a real denominator

2. Relevant equations

Not sure if there is really relevant equations to use here.

3. The attempt at a solution

First I multiply the top and bottom by the exponential. That gives me e^ix/(e^ix-r^2). I think this is a good first step, but I am unsure where to go from here.

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# Homework Help: Complex number in Denominator

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