Matrices and Determinants Part 2

Section: Mathematics
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Question : 29 of 100
 
Marks: +1, -0
If ar=cos‌
2rπ
9
+i‌sin‌
2rπ
9
,r=1
,2
,3
,....

i=√−1, then the determinant |
a1a1a3
a4a5a6
a7a8a9
|
is equal to
[31 Aug 2021 Shift 1]
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