If A is an 3 3 non-singular matrix such that A^ =A^ A and B=A^ -1 A^ , then BB' equals :
Mathematics · JEE Main · NTA Exams — Matrices and Determinants
If A is an \(3 \times 3\) non-singular matrix such that \(A^{\prime}=A^{\prime} A\) and \(B=A^{-1} A^{\prime}\), then \(\text { BB' }\) equals :
- \(\mathrm{E}^{-1}\)
- \(\left[B^{-1}\right]^{\prime}\)
- \(I+\mathrm{E}\)
- \(\text { I }\)
Answer
(D) I
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