- #1

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## Homework Statement

How does [itex]\frac{e^{2iz}+2+e^{-2iz}}{4}=\frac{2}{4}[/itex]?

This is part of something more complex, but this should be enough information. I do not see how those exponentials cancel with each other to leave the [itex]\frac{2}{4}[/itex].

Thanks