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Math Help - e^{ikx}

  1. #1
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    e^{ikx}

    Is this true: |e^ikx|=|e^-ikx| = 1, and why?
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  2. #2
    MHF Contributor FernandoRevilla's Avatar
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    Re: e^{ikx}

    Hint For all y\in\mathbb{R} we have |e^{iy}|=|\cos y+i\sin y|=1 .
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