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Question
Choose the correct alternative:
If the square of the matrix `[(alpha, beta),(γ, - alpha)]` is the unit matrix of order 2, then α, β, and γ should
Options
1 + α2 + βγ = 0
1 – α2 – βγ = 0
1 – α2 + βγ = 0
1 + α2 – βγ = 0
Solution
1 + α2 + βγ = 0
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