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,则复数z6+1在复平面内对应的点在（ ）
≠0(z1z2的共轭复数是
),则
一定是( )
∈R的充要条件是|z|=1.
∈R,求z.
的值.
的模为__________.
(x∈R,y∈R),则x=___________,y=___________.
=
,则z=_________.
i,则ω3=__________,
3=__________,ω2+ω+1=_________,ω2003=______.