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

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

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$