Question

Which of the following is the conjugate of a complex number with −4 as the real part and 2 as the imaginary part?

Answer 1

@Directrix @dan815 @AlexandervonHumboldt2 @bibby

Answer 2

Well, if you have a complex number, the complex conjugate is just take the imaginary part and make it negative. So one way to show that you're taking the complex conjugate is to write this little star on it \[\LARGE (a+bi)^* = a-bi\]

Answer 3

so let me just get this straight i basically just makes b a negative number?

Answer 4

would it be 2 - 4i?

Answer 5

i mean -4 -2i?