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Doing the computations by hand, find the determinant of the matrix below

Nesma
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2022-05-28
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Doing the computations by hand, find the determinant of the matrix below.

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Nesma
2022-05-28
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We can compute the determinant by expanding about any row or column; the most efficient ones to choose are either the second column or the third row. In any case, the determinant will be −4.

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