NCERT Exercise 4.4 Q13 - Determinants
Question: If A=[[3,1],[-1,2]], show A^2-5A+7I=O and hence find A^{-1}.
Answer: A^{-1}=(1/7)[[2,-1],[1,3]].
Full step-by-step NCERT solution with diagrams on Something by Zero.
Question: If A=[[3,1],[-1,2]], show A^2-5A+7I=O and hence find A^{-1}.
Answer: A^{-1}=(1/7)[[2,-1],[1,3]].
Full step-by-step NCERT solution with diagrams on Something by Zero.