Question

if z = x + iy and w = 1 - zi/z - i . If z is purely real then |w| is equal to

PLZ PROVE THAT |w| = 1

Answer 1

Answer:

hey mate ...

Here's ur answer......

w=1-zi/z-i

=1-(x+yi)i/x+yi-i

=1-xi+i^2y/x+yi-i

=1-xi-y/x+yi-i