Question

Which of the following is the conjugate of a complex number with 6 as the real part and -5 as the imaginary part?
6 - 5i
-6 - 5i
6 + 5i
-6 + 5i

Answer 1

give a complex number of the form
\[z = a+bi \] We label the complex conjugate by:
\[\bar{z}=a-bi \] .

Example. If z = 2 - 4i, find its complex conjugate.

Ans:\[\bar{z} = 2+4i \]