![]() The modulus and the argument of the complex number. Let us try to understand the two important terms relating to the representation of complex numbers in the argand plane. The complex number z = a ib is represented with the real part - a, with reference to the x-axis, and the imaginary part-ib, with reference to the y-axis. The euclidean plane with reference to complex numbers is called the complex plane or the Argand Plane, named after Jean-Robert Argand. The complex number consists of a real part and an imaginary part, which can be considered as an ordered pair (Re(z), Im(z)) and can be represented as coordinates points in the euclidean plane. Let us try and understand more about the increasing powers of i. ![]() We have the value of i 2 = -1, and this is used to find the value of √-4 = √i 24 = 2i The value of i 2 = -1 is the fundamental aspect of a complex number. Further the iota(i) is very helpful to find the square root of negative numbers. The alphabet i is referred to as the iota and is helpful to represent the imaginary part of the complex number. Some of the examples of complex numbers are \(2 3i, -2-5i, \,\,\dfrac 1 2 i\dfrac 3 2\), etc. The value 'a' is called the real part which is denoted by Re(z), and 'b' is called the imaginary part Im(z). 1.Ī complex number is the sum of a real number and an imaginary number. A complex number is of the form a ib and is usually represented by z. Here we can understand the definition, terminology, visualization of complex numbers, properties, and operations of complex numbers. Further, the real identity of a complex number was defined in the 16th century by Italian mathematician Gerolamo Cardano, in the process of finding the negative roots of cubic and quadratic polynomial expressions.Ĭomplex numbers have applications in many scientific research, signal processing, electromagnetism, fluid dynamics, quantum mechanics, and vibration analysis. But he merely changed the negative into positive and simply took the numeric root value. ![]() ![]() Complex numbers are helpful in finding the square root of negative numbers. The concept of complex numbers was first referred to in the 1st century by a greek mathematician, Hero of Alexandria when he tried to find the square root of a negative number. ![]()
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