Question

The product of a complex number (z) to its conjugate is ?

Answer 1

try it ...

Answer 2

z=a+bi
z'=a-bi

Answer 3

take product

Answer 4

any luck ?

Answer 5

a^2-(bi)^2

Answer 6

and (bi)^2 = ?
use i^2 = -1

Answer 7

But the options are \[\left| Z \right|^2,\sqrt{z}\]

Answer 8

a^2+b^2

Answer 9

thats correct

Answer 10

What about the options ?

Answer 11

|z^2|=a^2+b^2

Answer 12

Thanks.

Answer 13

|z|^2 means magnitude of complex number which is defined as a^2+b^2

Answer 14

*square of magnitude

Answer 15

welcome ^_^