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

Answer 1

1 + α² + βγ = 0