A. x3+y3+z3+3xyz
B. x3+y3+z3-3xyz
C. x3+y3+z3
D. none
If |z-1/z+a|=1 where Re(a)≠0 then the locus of z=x+iy is
The region represented by |z+a|+|z-a|<4a is
If a=2i+2j+k, a.b=14, axb=3i-j-8k then b=
(1/1+2ω)-(1/1+ω)+(1/2+ω)=
If ω is a complex cube root of unity then ( 1 - ω + ω2)6 + ( 1- ω2 + ω)6 =
(1+ω)(1+ω2) )(1+ω3)(1+ω4)(1+ω5) (1+ω6)...(1+ω3n)=
(a+bω+cω2)/(c+aω+bω2)=
If (1 + cos θ + i sin θ)(1 + cos 2θ + i sin 2θ)=x+iy then y=
If sinA + sinB = l, cosA - cosB = m, then the value of cos(A - B) =
If x+iy= 1/1+ cos θ+ i sin θ, then 4x2=