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Silly complex number question

  1. Jun 28, 2008 #1
    If I were given a complex number, such as

    12/(12+3i)

    in order to find the real and imaginary parts of the number, I assume that I cannot just reduce the fraction and say the real part is 1 and the imaginary part is 4. I can almost guarantee that this will not calculate the correct answer.

    So how would I find the real and imaginary parts of this number?

    I'm sorry to ask such a stupid question, but I am rewriting MatLab code into ANSI C and need to separate such numbers into their real and imaginary parts.

    Thank you in advance.
     
  2. jcsd
  3. Jun 28, 2008 #2

    Integral

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    Multiply the top and bottom of the complex conjugate (12-3i). This clears the denominator of the imaginary component.
     
  4. Jun 28, 2008 #3
    Thank you.

    Sadly, I didn't think of doing that.
     
  5. Jun 29, 2008 #4

    arildno

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    Dearly Missed

    Why sadly?

    Next time, you'll manage on your own. :smile:
     
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