Complex analysis

1. Feb 12, 2007

buzzmath

Can anyone give me some advice on how to solve this problem?

in the reflection principle if f(x) is pure imaginary then the conjugate of f(z)=-f(z*) where z* is the complex conjugate of z.

Any advice on where to start?

thanks

2. Feb 13, 2007

cristo

Staff Emeritus
hint: if f is purely imaginary, then one can write f(z)=iy, for some real number, y.