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    Dear Friend Posts: 1, Reputation: 1
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    #1

    Feb 12, 2009, 03:31 AM
    Imaginary axis of complex number.
    What is the difference between real number and complex number? When complex numbers are plotted on graph why the Y axis is called imaginary part?
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    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Feb 12, 2009, 04:03 AM

    complex numbers have both a real and imaginary part, the imaginary part is a multiple of , more commonly represented by i.

    Complex numbers can be represented on an Argand diagram in the way that you mention, with the x axis showing the magnitude of the real part, and the y axis showing the magnitude of the imaginary point.

    For example, the complex number P = 2 + 3i would be shown on the Argand diagram as a point at (2,3).
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