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Math Help - Hoe to compute this

  1. #1
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    Hoe to compute this

    Hi everyone,

    I am studying discrete Fourier transform, i dont know how to input this into my calculator, im using Casio570ES.

    e^{-i2\pi}, the answer is 1.
    e^{-i\frac{3\pi}{2}}, im suppose to get i

    can someone help me, thank you in advance for all your help & support,really appreciate.
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  2. #2
    Senior Member AllanCuz's Avatar
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    Quote Originally Posted by anderson View Post
    Hi everyone,

    I am studying discrete Fourier transform, i dont know how to input this into my calculator, im using Casio570ES.

    e^{-i2\pi}, the answer is 1.
    e^{-i\frac{3\pi}{2}}, im suppose to get i

    can someone help me, thank you in advance for all your help & support,really appreciate.
    Not sure how to put this into the calculator directly, but you can use eulers formula to input it.


    e^{-i2\pi} = cos( 2 \pi ) - i sin( 2 \pi ) = 1 - 0 = 1

    e^{-i\frac{3\pi}{2}} = cos( \frac{3\pi}{2} ) - i sin( \frac{3\pi}{2} ) = 0 -i(-1) = i
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