1. some help about harmonic function

Show the function v=x+2y is part of a harmonic conjugate part. Find its harmonic conjugate and say what f(z)is

I have found my u=y-2x now to find the F(z) i have to add the u+vi
so f(z)=y-2x+ix+2yi
is ok with that function or need to represent something with z!??!

thx

2. f(z)=y-2x+ix+2yi
f(z)=y-2x+i(x+2y)

no you should not
it is ok

3. Thanks