(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known dataBranch cut for cos(sqrt(z)).

2. Relevant equations

3. The attempt at a solutionApparently there is no need for a branch cut for this function, but I am not sure why - I heard it has something to do with cos being an even function. Any clarification would be appreciated.

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# Homework Help: Branch Cut

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