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Mandy_Nakamoto

  • 2 years ago

Express 1/(4-i)^2 in cartesian form.. is the answer 15/289 + 8i/289?? Am i rite??

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  1. razor99
    • 2 years ago
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    @Mandy_Nakamoto what kind of equation is that

  2. Mandy_Nakamoto
    • 2 years ago
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    it says to change it to x+iy form.. under the complex number topic..

  3. razor99
    • 2 years ago
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    i think your are correct lol not sure

  4. Rajarshi
    • 2 years ago
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    oh you have to draw it on Argand plane I think

  5. hoblos
    • 2 years ago
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    yes you are right XD

  6. Rajarshi
    • 2 years ago
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    yeah but Argand Plane will only give a graphical solution

  7. razor99
    • 2 years ago
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    yaaa katrina kaif to the resque

  8. hoblos
    • 2 years ago
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    1/(4-i)^2 = 1/(15 - 8i) multiply by the conjugate ( 15+8i) (15+8i)/ 289 = 15/289 + 8i/289

  9. Mandy_Nakamoto
    • 2 years ago
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    Yay! im rite!!!! huhuhu...

  10. razor99
    • 2 years ago
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    good one Mandy

  11. Mandy_Nakamoto
    • 2 years ago
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    But about the argand plane.. i have to change the equation to cartesian form first rite??

  12. Rajarshi
    • 2 years ago
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    no in order to draw it on argand plane you only need the x + iy format and the point is (x,y) understand

  13. Rajarshi
    • 2 years ago
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    So bascially the point you will get is (15/289 , 8/289)

  14. razor99
    • 2 years ago
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    wow Rajarshi you are awesome at maths

  15. Mandy_Nakamoto
    • 2 years ago
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    but isnt cartesian form=x+iy form??

  16. Rajarshi
    • 2 years ago
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    |dw:1331292622468:dw| get it

  17. Mandy_Nakamoto
    • 2 years ago
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    Yeah...

  18. Mandy_Nakamoto
    • 2 years ago
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    Thanks a lot guys!! ^^

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