Question

Find the complex conjugate z1 of z1 = -1 +5i.

Answer 1

When we have a number z:

`z=a+bi`

The complex conjugate will be:

`z^(\ast)=a-bi`

We change the sign of the number next to the i.

In this case, we have:

`z_1=-1+5i`

So, for the complex conjugate, we need to change the sign of the 5.

And the result will be:

`z^(\ast)_1=-1-5i_{}`

Answer:

-1-5i