The Basics of Complex Numbers
Concept

Imaginary Numbers

The set of imaginary numbers, represented by the symbol is formed by all the numbers that can be written as where is any real number, is a non-zero real number, and is the imaginary unit.
A complex number a+bi is shown in a green flag. The information that a and b are real numbers and b is not equal to 0 is given below the flag.

The union of the set of imaginary numbers and the real numbers forms the set of complex numbers.

Loading content