题目内容
把复数z的共轭复数记作
,已知(1+2i)
=4+3i,求z及
.
| . |
| z |
| . |
| z |
| z | ||
|
∵(1+2i)
=4+3i,∴
=
=
=
=2-i,
∴z=2+i,∴
=
=
=
=
+
i.
| . |
| z |
| . |
| z |
| 4+3i |
| 1+2i |
| (4+3i)(1-2i) |
| (1+2i)(1-2i) |
| 10-5i |
| 5 |
∴z=2+i,∴
| z | ||
|
| 2+i |
| 2-i |
| (2+i)(2+i) |
| (2-i)(2+i) |
| 4-1+4i |
| 5 |
| 3 |
| 5 |
| 4 |
| 5 |
练习册系列答案
相关题目
把复数z的共轭复数记作
,i为虚数单位.若z=1+i,则(1+z)•
=( )
. |
| z |
. |
| z |
| A、3-i | B、3+i |
| C、1+3i | D、3 |