A. x2+y2
B. x2+y2>4a2
C. x2-y2
D. none
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=
If x2+x+1=0, then the value of (x+1/x)2+(x2+1/x2)2+...+(x27+1/x27)2 is
If (1+ cos θ+ i sin θ)(1+ cos 2θ+i sin2θ)= x+iy, then y=