- #1

m1ke_

- 21

- 0

I'm reviewing some notes for a course and am confused by one step that they do. They are deriving an equation for the ampiltude of a wave that is being damped and driven by a force. I understand it all except for one step in which they state that:

([itex]\omega[/itex][itex]_{o}[/itex][itex]^{2}[/itex] - [itex]\omega^{2}[/itex]) - i(2[itex]\beta \omega[/itex]) = [itex]\sqrt{(\omega_{o}^{2} - \omega^{2})^{2} + (2\beta\omega)^{2}}e^{-i\delta} [/itex]

Can anyone explain this? Or do I need to post more material in order for it to be explained?