Complex Conjugate
The complex conjugate of a + bi is a – bi,
and similarly the complex conjugate of a – bi is a + bi.
This consists of changing the sign of the
imaginary part of a complex
number. The real
part is left unchanged.
Complex conjugates are indicated using a horizontal line
over the number or variable.
For example, .
Note: Complex conjugates are similar to, but not the same as, conjugates.
Expression 
Complex Conjugate 


See
also
Complex
number formulas
