If A = (\begin{matrix} \alpha \beta \ \gamma −\alpha \ \end{matrix}) is such that A 2 = l, then :

Correct Answer is : 1 - α2 - βγ = 0

TN TET 2019 Paper 1

Question : 97 of 150

Marks: +1, -0

If A =

(\begin{matrix} α \;β \\ γ \;−α \\ \end{matrix})

is such that A²= l, then :

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