A number of form x + iy where x, y ∈ R and i = √(-1) is called a complex number.
A complex number may also be defined as an order pair z = (x,y).
i is called an imaginary number.
- i2 = -1; i3 = -1; i4 = 1
Algebra of Complex Numbers
Conjugate of Complex Number
Modulus (Absolute Value) of Complex Number