已知复数Z=
|
化简得Z=
=
+i3 (1-
i)23
=-
+i3 -2-2
i3
•1 2
+i3 1+
i3
=-
•1 2
=-(
+i)(1-3
i)3 (1+
i)(1-3
i)3
•1 2
=-2
-2i3 4
+3 4
,i 4
故|z|=
=(-
)2+(3 4
)21 4
,1 2
故选B
已知复数Z=
|
化简得Z=
=
+i3 (1-
i)23
=-
+i3 -2-2
i3
•1 2
+i3 1+
i3
=-
•1 2
=-(
+i)(1-3
i)3 (1+
i)(1-3
i)3
•1 2
=-2
-2i3 4
+3 4
,i 4
故|z|=
=(-
)2+(3 4
)21 4
,1 2
故选B