Question

Which of the following are ALWAYS correct for complex numbers u, v and z? (choose ALL correct answers)

A. arg(z^2)=(argz)2
B. argz=argz
C. Re(z)=Im(iz)
D. Re(u+v)=Re(u)+Re(v)
E. Im(u+v)=Im(u)+Im(v)

Answer 1

i think three of those

Answer 2

well D, E and ....

Answer 3

B looks like an identity to me.

Answer 4

im not heaps sure

Answer 5

sorry B is like this B. argz=arg(conjugate z )

Answer 6

i think c is also true

Answer 7

yeah c seams true

Answer 8

but what about A