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allenh98

  • 4 years ago

I need help with a complex number zeros/poles difference equations kinda thing http://i42.tinypic.com/3585rtx.png

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  1. 142343
    • 4 years ago
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    www.mathway.com

  2. 142343
    • 4 years ago
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    and i be back

  3. EarthCitizen
    • 4 years ago
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    is z given ?

  4. allenh98
    • 4 years ago
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  5. allenh98
    • 4 years ago
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    z is a variable

  6. allenh98
    • 4 years ago
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    I expanded the top, not even close to getting 0.1765 z ^ -1

  7. EarthCitizen
    • 4 years ago
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    you can use De Moivre's theorem \[z ^{-n} = r ^{-n}[\cos(n \theta)-jsin(n \theta)]\]

  8. allenh98
    • 4 years ago
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    that gives me 1

  9. EarthCitizen
    • 4 years ago
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    can you use MATLAB ?

  10. allenh98
    • 4 years ago
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    nvm i found the answer! just needed to fully expand it and it works itself out thx for help!!!

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