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M=[(0,-alpha),(alpha,0)]. If (I-M^2)N=-2...

`M=[(0,-alpha),(alpha,0)]`. If `(I-M^2)N=-2I & N =sum_(k=1)^49M^(2k)` ,then `alpha^2= __`

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2022-Question
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  20. Which of the following is tautology ?

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