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If A = \left[\begin{array}{ccccc} 2 & 8 & -4 & 3 & -9 \\ 0 & -5 & -7 & 3 & -4 \\ 0 & 0 & 5 &
2 & -4 \\ 0 & 0 & 0 & 4 & 1 \\ 0 & 0 & 0 & 0 & 4 \end{array}\right] then det (A)
Fig: 1
Fig: 2
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2 & -4 \\ 0 & 0 & 0 & 4 & 1 \\ 0 & 0 & 0 & 0 & 4 \end{array}\right] then det (A)
Fig: 1
Fig: 2
Fig: 3
