Question

Medal!
Which of the following is the conjugate of a complex number with 3 as the real part and −5 as the imaginary part?

A. −5i + 3
B. −5i − 3
C. 3 − 5i
D. 3 + 5i

Answer 1

is it A?

Answer 2

D

Answer 3

but it says -5 not positive 5

Answer 4

the conjugate of a+bi is a-bi

Answer 5

or the conjugate of a-bi is a+bi

Answer 6

The complex conjugate of Z=3-5i is therefor 3+5i

Answer 7

so it is D?

Answer 8

Yes

Answer 9

now the weird thing is...
if we look at a+bi as bi+a
then the conjugate of bi+a is bi-a
or the conjugate of bi-a is bi+a

Answer 10

but yeah I think they were looking for answer d