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Thread: Most Interesting Equation

  1. #1
    Super Member harpazo's Avatar
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    Most Interesting Equation

    In your opinion, what is the most interesting equation in the world of math? What makes it interesting?
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  2. #2
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    Re: Most Interesting Equation

    $e^{ix}= cos(x)+ i sin(x)$
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  3. #3
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    Re: Most Interesting Equation

    Total area of your skin:
    SQRT(W * H) / 60, where W = weight in kg. and H = height in cm.

    Much valuable time has been wasted regarding the above,
    as you will notice here:
    https://www.calculator.net/body-surf...alculator.html
    Last edited by DenisB; Feb 11th 2019 at 01:43 PM.
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  4. #4
    Super Member harpazo's Avatar
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    Re: Most Interesting Equation

    Quote Originally Posted by HallsofIvy View Post
    $e^{ix}= cos(x)+ i sin(x)$
    What is this equation used for?
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    Re: Most Interesting Equation

    Quote Originally Posted by harpazo View Post
    What is this equation used for?
    Among other things it's the basis for representing sinusoidal signals with a non-zero phase shift as a complex exponential.

    This makes certain calculations much more elegant.

    You can Wiki Fourier Series which is one of the more powerful tools in the box.
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  6. #6
    Super Member harpazo's Avatar
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    Re: Most Interesting Equation

    Quote Originally Posted by romsek View Post
    Among other things it's the basis for representing sinusoidal signals with a non-zero phase shift as a complex exponential.

    This makes certain calculations much more elegant.

    You can Wiki Fourier Series which is one of the more powerful tools in the box.
    I thank you for your reply but Fourier Series is too advanced for me at this time.
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