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Thread: e^(pi*i)

  1. #1 e^(pi*i) 
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    therefore .

    If , so how does the imaginary unit make it ?

    I know it has something to do with trigonometry. Can anyone explain?


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    • #2  
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      e^(πi) = cos(π) + isin(π) = -1.


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    • #3  
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