4. Find the inverse of the matrix A = egin{pmatrix} -1 & -1 & -2 \ 6 & 5 & 2 \ 0 & 0 & -2 end{pmatrix}.
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Step 1: Augment the matrix A with the identity matrix: \[ \begin{bmatrix} -1 & -1 & -65 & 2 & 0 & 0 \\ 1 & 0 & 0 & 1 & 0 & 0 \\ 0 & 1 & 0 & 0 & 1 & 0 \\ 0 & 0 & 1 & 0 & 0 & 1 \\ \end{bmatrix} \] Show more…
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