Homework Statement
Hey all. I am trying to get ready for my upcomming calculus exam, but I am kind of stuck here. I have to solve: arg((z+i)/(z-1))=3π/2
Homework Equations
ehm none
The Attempt at a Solution
Tried to fill in z=a+bi:
(a+bi+i)/(a-1+bi)
then multiply it with its...