CUSAT 2021 BTech Solved Paper Shift 1

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Question : 129 of 250

Marks: +1, -0

If α,β are roots of the equation x2−2x+4=0, then αn+βn is equal to

2n‌cos(‌
nπ
3
)
2nsin‌(‌
nπ
3
)
2n+1‌cos(‌
nπ
3
)
2n+1sin‌(‌
nπ
3
)

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