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Hyperbolic Sine - Exponent transition

  1. Feb 12, 2014 #1
    Hey
    I didn't understand the transition below,
    I'd be glad for some help
    thanks
     

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  2. jcsd
  3. Feb 12, 2014 #2

    AlephZero

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    Multiply all the terms by ##e^{ih\omega/2}##.
    Then multiply all the terms by -1.
     
  4. Feb 12, 2014 #3
    Thanks !
     
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