问题
选择题
已知复数Z=
|
答案
复数Z=
+(2
-i3 1+2
i3
)2 0102 1-i
=
+[ (2
-i)(1-23
i)3 (1+2
i)(1-23
)3
] 2010
(1+i)2 (1-i)(1+i)
=
+(cos45°+isin45°)2010-13i 13
=-i+(cos90°+isin90°)
=0
故选A.
已知复数Z=
|
复数Z=
+(2
-i3 1+2
i3
)2 0102 1-i
=
+[ (2
-i)(1-23
i)3 (1+2
i)(1-23
)3
] 2010
(1+i)2 (1-i)(1+i)
=
+(cos45°+isin45°)2010-13i 13
=-i+(cos90°+isin90°)
=0
故选A.