Find all fourth roots of 1 (including complex numbers).
问题描述:
Find all fourth roots of 1 (including complex numbers).
1开四次方得多少?请找出所有的解(包括虚数解).
答
1,-1,i
如果有疑问请发消息给我,我用的电脑请问有解题过程吗?O(∩_∩)O谢谢!1^4=(1^2)^2=1。所以1^2=正负1.分两种情况:1^2=+1.得1=正负11^2=-1.得1=i