Choose the correct answer in the following questions:
if A = `[(alpha, beta),(gamma, -alpha)]` is such that A2 = I then
(A) 1 + α² + βγ = 0
(B) 1 – α² + βγ = 0
(C) 1 – α² – βγ = 0
(D) 1 + α² – βγ = 0
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Solution
Answer: C
On comparing the corresponding elements, we have:
Concept: Types of Matrices
Is there an error in this question or solution?
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