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If for the matrix \(A=\left[\begin{array}{cc}1 & -\alpha \\ \alpha & \beta\end{array}\right], A A^{\top}=I_2\), …

Q1

If for the matrix \(A=\left[\begin{array}{cc}1 & -\alpha \\ \alpha & \beta\end{array}\right], A A^{\top}=I_2\), then the value of \(\alpha^4+\beta^4\) is:

[JEE Main 2021, 25 Feb (Shift 2)]

a

3

b

4

c

2

d

1

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