UPSC NDA I 2017 Mathematics Solved Paper

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Question : 36 of 120

Marks: +1, -0

The value of (‌‌

−1+i√3

2

)n+(‌‌

−1−i√3

2

)n Where n is not a multiple of 3 and i=√−1 is

[NDA I 2017]

1
−1
i
−i

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