Chapter-5. Complex Number and Quadratic Equations Mathematics class 11 in english Medium CBSE Notes

The Modulus and Congugate of a Complex Number

Let z = a + ib be a complex number. 

Then, the modulus of z, denoted by |z|, is defined to be the non-negative real number

 ​, i.e  

Conjugate: The conjugate is where you chaange the sign in the middle of two terms like

and the congugate of z, denoted as;

The conjugate is where you change the sign in the middle of two terms like this:

d,;d;a;'