[Video Solution] Let A = \left[ \matrix 1 & 2 \cr - 1 & 4 \cr \right]. If A-1 = αI ... | ASPIRE STUDY

Let A = \left[ \matrix 1 & 2 \cr - 1 & 4 \cr \right]. If A-1 = αI + βA, α, β \in R, I is a 2 * 2 identity matrix then 4(α - β) is equal to : | Watch the step-by-step video solution for this NIMCET PYQ.