Question

Escreva a matriz A=(aij)2x2 em que aij=3i-2j

Answer 1

Boa noite!

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$\begin{bmatrix}a11&a12\\a21&a22\\\end{bmatrix}$

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$\mathrm{a11}\Rightarrow\mathrm{3\times1}-\mathrm{2\times1}\Rightarrow\mathrm{3-2}=\boxed{1}$

$\mathrm{a12}\Rightarrow\mathrm{3\times1}-\mathrm{2\times2}\Rightarrow\mathrm{3-4}=\boxed{-1}$

$\mathrm{a21}\Rightarrow\mathrm{3\times2}-\mathrm{2\times1}\Rightarrow\mathrm{6-2}=\boxed{4}$

$\mathrm{a22}\Rightarrow\mathrm{3\times2}-\mathrm{2\times2}\Rightarrow\mathrm{6-4}=\boxed{2}$

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Matriz Resposta;

$\begin{bmatrix}1&-1\\4&2\\\end{bmatrix}$

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Att;Guilherme Lima