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$e = [\begin{array}{c} - 3 & 6 & - 5 & 0 \\ - 4 & - 1 & 9 & 19 \end{array}]$

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Transpose the matrix by switching its rows to columns.

$[\begin{array}{c} - 3 & - 4 \\ 6 & - 1 \\ - 5 & 9 \\ 0 & 19 \end{array}]$