What is the complex conjugate of #z = 9 - 5i#?

2 Answers
Sep 11, 2017

For #z = 9 - 5i# we must have it's complex conjugate #hat z =9+5i#

Explanation:

Two complex numbers #(a+bi) and (a-bi): {a,b} in RR# are said to be a conjugate pair.

So given a complex number, to find it's complex conjugate, all you have to do is change the sign of the imaginary part.

Therefore, in this example, the conjugate of #9-5i# is #9+5i#

#9+5i#

Explanation:

To find the conjugate of any is so easy. In this we only need to change the sign of imaginary part. Like in this question the imaginary part is #5i# and the sign of this imaginary part is #-#. So we change the sign into #+#.

Thus the conjugate of #9-5i# is #9+5i#.