Question
In Problems 61-66, show that each matrix has no inverse. $\left[\begin{array}{rrr}-3 & 1 & -1 \\ 1 & -4 & -7 \\ 1 & 2 & 5\end{array}\right]$
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If the determinant is zero, the matrix does not have an inverse. Show more…
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In Problems $61-66$, show that each matrix has no inverse. $$\left[\begin{array}{rrr} -3 & 1 & -1 \\ 1 & -4 & -7 \\ 1 & 2 & 5 \end{array}\right]$$
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