复数z=2?i1+i(i为虚数单位)的值为______

复数z=2?i1+i(i为虚数单位)的值为______.
2025-06-20 07:58:37
推荐回答(1个)
回答1:

∵复数z=

2?i
1+i
=
(2?i)(1?i)
(1+i)(1?i)
=
1?3i
2
1
2
?
3
2
i

故答案为
1
2
?
3
2
i