若实数
x、y满足(1+i)x+(1-i)y=2,则xy等于[
]|
A .1 |
B .2 |
C .-2 |
D .-1 |
![]()
[
]|
A .0 |
B .1 |
C .-1 |
D .i |
当
[
]|
A .1 |
B .-1 |
C .i |
D .-i |
复数
[
]|
A . |
B . |
C . |
D . |
![]()
[
]|
A . |
B .2i |
|
C . |
D .-2i |
![]()
[
]|
A .1 |
B .-1 |
C .i |
D .-i |
若
[
]|
A .1+i |
B .1±i |
C .2+i |
D .2±i |
![]()
[
]|
A . |
B . |
|
C . |
D .-1 |
![]()
[
]|
A . |
B .2 |
C .1 |
D .i |
(1
+2i)÷(3-4i)等于[
]|
A . |
B . |
|
C . |
D . |