AP EAMCET Engineering 18 Sep 2020 Shift 2 Paper

Section: Mathematics

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Question : 55 of 160

Marks: +1, -0

If α,β are the roots of x2−2x+4=0 for n∊N, what is the value of αn+βn=

2n+2cos(
nπ
3
)
2n+1cos(
nπ
3
)
2n+1cos(
nπ
6
)
2n+2cos(
nπ
6
)

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