Argand Diagram - Complex Number In Graphical Form

Complex numbers, which are imaginary roots to equation, can be represented in a special graph called the Argand diagram.

An example of complex number 4 + i3 is illustrated graphically below in Diagram 1.



This Argand Diagram represents both the Real number (horizontal axis) and Imaginary number (vertical axis) in a complex number expression.

In this diagram, the polar (angle) information of the complex number can be extracted. The modulus or amplitude can also be obtained from this Argand diagram.

This special graph is therefore another useful mathematical tool used to compute or present complex numbers.

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