COMPLEX NUMBER PDF

 Complex numbers are the numbers that are expressed in the form of a+ib where, a,b are real numbers and  ‘i’ is an imaginary number called “iota”. The value of i = (√-1). For example, 2+3i is a complex number, where 2 is a real number (Re) and 3i is an imaginary number (Im). 

Combination of both the real number and imaginary number is a complex numbe

Examples of complex numbers

1 +

-13 – 3

0.89 + 1.2 

√5 + √2

An imaginary number is usually represented by ‘i’ or ‘j’, which is equal to √-1. Therefore, the square of the imaginary number gives a negative value.

Since, i = √-1, so, i2 = 

The main application of these numbers is to represent periodic motions such as water waves, alternating current, light waves, etc., which rely on sine or cosine waves, etc

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