PRINCIPAL ARGUMENT = ARGUMENT + 2nPI
arg(Z) = Arg (Z) + 2nPI
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No difference. The set of complex numbers includes the set of imaginary numbers.
The difference of two squares which enables complex conjugates to be used.The difference of two squares which enables complex conjugates to be used.The difference of two squares which enables complex conjugates to be used.The difference of two squares which enables complex conjugates to be used.
Graphically the difference is quite clear: the real numbers can be put on a line, the so-called number-line; while complex numbers are represented as points on a plane. A complex number is made up of two parts, like a vector in two dimensions.
This is best done if the complex number is in polar coordinates - that is, a distance from the origin, and an angle. Take the square root of the argument (the absolute value) of the complex number; and half the angle.
complex scale meters are meters that can be used for more than one function such as Amps, Resistance, or Voltage. Whereas multiple scale meters measure only one type of function.