Class 12 Matrices · Mcq Single Correct1 Marksmatrix_polynomials_and_inverse
Class 12 Maths · Matrices · Mcq Single Correct #21
If A²−A+I=O, express A⁻¹ in terms of A and I.
✅ Step-by-Step Solution
Final Answer: Option (C): I−A
- The relation gives A−A²=I, so A(I−A)=(I−A)A=I. Consequently A⁻¹=I−A.
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