Question

let z=x+iy and w=1-iz/z-i then show that IwI=1, then z is real

Answer 1

Answer:

⇒

z

=

x

∴

z

=

x

+

i

(

0

)

=

x

⇒

y

=

0

⇒

y

−

1

=

1

+

y