题目内容
化简复数z=
=( )
| -2+i |
| 1+2i |
| A.-i | B.i | C.-1 | D.1 |
z=
=
=
=i
故选B.
| -2+i |
| 1+2i |
| (-2+i)(1-2i) |
| (1+2i)(1-2i) |
| 5i |
| 5 |
故选B.
练习册系列答案
相关题目
题目内容
| -2+i |
| 1+2i |
| A.-i | B.i | C.-1 | D.1 |
| -2+i |
| 1+2i |
| (-2+i)(1-2i) |
| (1+2i)(1-2i) |
| 5i |
| 5 |