Let A=[12−14]. If A−1=αI+βA, α, β∈R, I is 2×2 identity matr – InterviewSolution

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1.	Let A=[12−14]. If A−1=αI+βA, α, β∈R, I is 2×2 identity matrix, then 4(α−β) is
Answer» Let $A = [\begin{matrix} 1 & 2 - 1 & 4 \end{matrix}] .$ If $A^{- 1} = α I + β A, α, β \in R, I$ is $2 \times 2$ identity matrix, then $4 (α - β)$ is

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