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$[\begin{array}{c} 7 & 8 & 8 & 7 \\ 8 & 16 & 16 & 8 \\ 16 & 32 & 32 & 16 \end{array}]$

Bước 1

Transpose the matrix by switching its rows to columns.

$[\begin{array}{c} 7 & 8 & 16 \\ 8 & 16 & 32 \\ 8 & 16 & 32 \\ 7 & 8 & 16 \end{array}]$