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i为虚数单位,则1+i2+i3的值为() A.1B.-1C.iD.-i
i为虚数单位,则1+i2+i3的值为()
A.1
B.-1
C.i
D.-i
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i为虚数单位,则1+i2+i3的值为()
A.1
B.-1
C.i
D.-i
i为虚数单位,则(2—3i)(3+2i)=()
A.12-13i
B.-5i
C.12+5i
D.12-5i
已知复数x=1+i,i为虚数单位,则z2=()
A.2i
B.-2i
C.2+2i
D.2-2i
设z=[sin(2π/3)+icos(2π/3)]2,i是虚数单位,则argz等于 ()
A.π/3
B.2π/3
D.4π/3
D.5π/3