Find the inverse of a 3x3 diagonal matrix

CBSE Class 12 · Mathematics · Determinants · similar questions asked in 2 years (2024, 2025)

1. Q1 2024 1 mark

   If $A = \begin{bmatrix} 2 & 0 & 0 \\ 0 & 3 & 0 \\ 0 & 0 & 5 \end{bmatrix}$, then $A^{-1}$ is…

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2. Q2 2025 1 mark

   If $A = \begin{bmatrix} -1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{bmatrix}$, then $A^{-1}$ is

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