✅ Após resolver os cálculos, concluímos que a matriz procurada é:
[tex]\Large\displaystyle\text{$\begin{gathered}\boxed{\boxed{\:\:\:\bf B = \begin{bmatrix}-2 & -3\\-3 & -4\\ -4 & -5\end{bmatrix}\:\:\:}}\end{gathered}$}[/tex]
Seja a lei de formação da matriz:
[tex]\Large\displaystyle\text{$\begin{gathered} B_{3\times2} = b(ij),\:\:\:\textrm{Onde}\,b(ij) = -i - j\end{gathered}$}[/tex]
Então temos:
[tex]\Large\displaystyle\text{$\begin{gathered}B = \begin{bmatrix}-1 - 1 & -1 - 2\\-2 - 1 & -2 - 2\\-3 - 1 & -3 - 2 \end{bmatrix}\end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} = \begin{bmatrix} -2 & -3\\-3 & -4\\-4 & -5\end{bmatrix}\end{gathered}$}[/tex]
✅ Portanto, a matriz procurada é:
[tex]\Large\displaystyle\text{$\begin{gathered} B = \begin{bmatrix} -2 & -3\\-3 & -4\\-4 & -5\end{bmatrix}\end{gathered}$}[/tex]
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