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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 5 · Set 1 · Q3
If for a square matrix A, A^2- A + I = O, then A^-1 equals
If for a square matrix $\displaystyle \mathrm{A}, \mathrm{A}^{2}-\mathrm{A}+\mathrm{I}=\mathrm{O}$, then $\displaystyle \mathrm{A}^{-1}$ equals
Official answer
(C)
I - A
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CBSE Class 12 Mathematics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.