复数1减3i分之3加i等于几

2025-12-13 01:51:25
推荐回答(2个)
回答1:

(3+i)/(1-3i)
=(3+i)(1+3i)/(1+3i)(1-3i)
=(3+9i+i-3)/(1+3^2)
=10i/10
=i

回答2:

等于i