Matrix Inverse Determinant (Jee Mains) | ExamDuo
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Formation, Types & Operations
Hard
Matrix Inverse Determinant
Let I be the identity matrix of order 3 × 3 and for the matrix A =
, |A| = –1. Let B be the inverse of the matrix
adj
(A
adj
(A
2
)). Then |(λB + 1)| is equal to _______
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![\left[ {\begin{array}{*{20}{c}} \lambda &2&3\\[0.9em] 4&5&6\\[0.9em] 7&{ - 1}&2 \end{array}} \right]](https://cdn.examduo.ai/jee/61d6478aa3954a7b.webp)
, |A| = –1. Let B be the inverse of the matrix adj(A adj(A2)). Then |(λB + 1)| is equal to _______