Complex Numbers consist the major part of the mathematics.However, Introduction to Complex numbers initially talks about the term “i”. Which is an ‘Imaginary number’. It is a square root of negative unity. Complex numbers has wide region of scope, not only in analysis but also Spaces, calculus, etc.
A complex number is a number that are in the form a + bi, where a and b are real numbers & i is an imaginary. Complex numbers are bi-dimensional, they consist of a pair of two real numbers.