1. (a) What are
z; jzj;arg (z);
when z= 1 j:
[1, 1, 1]
(b) Determine
z1z2;z2
z1
;
when z1= 6 + 8jand z2= 2 j:
[2, 3]
(c) Sketch on separate Argand diagrams the locus of points satisfying
jzj 2;arg (z) = 3
4:
[3, 3]
(d) Express z= 4ej=6in rectangular form.
[2]
(e) If
z1= 1 + j; z2=p3j;
express z1
z2
;
in polar form.
[4]
1
