Question:medium
If \( A = \begin{bmatrix} 1 & 2 & 3 0 & 1 & 4 5 & 6 & 0 \end{bmatrix} \), then the sum of the diagonal elements of \( A^{-1} \) is
If \( A = \begin{bmatrix} 1 & 2 & 3 0 & 1 & 4 5 & 6 & 0 \end{bmatrix} \), then the sum of the diagonal elements of \( A^{-1} \) is
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For inverse problems, if determinant is 1, inverse = adjoint, which simplifies calculations significantly.
Updated On: May 1, 2026
- \( 1 \)
- \( 3 \)
- \( -3 \)
- \( 0 \)
- \( 2 \)
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The Correct Option is B
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