logo

Ask Questions, Get Answers

 
X
 Search
Want to ask us a question? Click here
Browse Questions
Ad
0 votes

The order of $-i$ in the multiplicative group of $4^{th} $ roots of unity is

\[\begin{array}{1 1}(1)4&(2)3\\(3)2&(4)1\end{array}\]

Can you answer this question?
 
 

1 Answer

0 votes
The roots of fourth roots of unity are
$1.-1,i,-i$
$(-i)^4=i^4=1$
Order of $(-i) =4$
Hence 1 is the correct answer.
answered May 22, 2014 by meena.p
 

Related questions

Ask Question
student study plans
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...