complex number

Discussion in 'Math' started by pot, Nov 15, 2015.

  1. pot

    Thread Starter New Member

    Nov 9, 2015
    9
    0
    hi

    how I can collect this number use my hand and calculator "fx-991ES"?
    complex number

    e^0.00931 e^j0.3730 in radiant
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    There might be a missing symbol in the expression. The first number is a plain or real number.

    e^{0.00931} = 1.009

    For the second expression you can use the Euler Identity

    e^{jx}=cos(x)+j sin(x)

    x is in radians
     
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  3. WBahn

    Moderator

    Mar 31, 2012
    17,757
    4,800
    Can you do it without a calculator? Or are you relying on the calculator being a brain substitute?

    You calculator supports polar entry of complex numbers. Converting your expression above to polar is trivial

    Magnitude = e^0.00931
    Angle = 0.3730 radians

    Look at your owner's manual for how to enter the values:

    http://support.casio.com/storage/en/manual/pdf/EN/004/fx-115_991ES_PLUS_C_EN.pdf

    Look on page 25.
     
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  4. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    I hadn't thought of an implied multiplication!

    e^{0.00931} \cdot e^{j0.3730} = e^{0.00931+j 0.3730}

    Duh!
     
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