Question

calcule os produtos indiciados:
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Answer 1

Resposta:

Explicação passo-a-passo:

Respostas:

I.

$\left[\begin{array}{ccc}2&3&1\\4&0&1\\\end{array}\right] .\left[\begin{array}{ccc}4&1\\2&-3\\1&5\end{array}\right] =\left[\begin{array}{ccc}2.4+3.2+1.1&2.1+3.(-3)+1.5\\4.4+0.2+1.1&4.1+0.(-3)+1.5\\\end{array}\right]=\\\\\\=\left[\begin{array}{ccc}8+6+1&2-9+5\\16+0+1&4+0+5\\\end{array}\right]=\left[\begin{array}{ccc}15&-2\\17&9\\\end{array}\right]$

II.

$\left[\begin{array}{ccc}5&3\\8&9\\\end{array}\right].\left[\begin{array}{ccc}1&0\\0&1\\\end{array}\right]=\left[\begin{array}{ccc}5.1+3.0&5.0+3.1\\8.1+9.0&8.0+9.1\\\end{array}\right]=\left[\begin{array}{ccc}5+0&0+3\\8+0&0+9\\\end{array}\right]=\left[\begin{array}{ccc}5&3\\8&9\\\end{array}\right]$

III.

$\left[\begin{array}{ccc}1&0\\0&1\\\end{array}\right].\left[\begin{array}{ccc}2&3\\7&0\\\end{array}\right]=\left[\begin{array}{ccc}1.2+0.7&1.3+0.0\\0.2+1.7&0.3+1.0\\\end{array}\right]=\left[\begin{array}{ccc}2+0&3+0\\0+7&0+0\\\end{array}\right]=\left[\begin{array}{ccc}2&3\\7&0\\\end{array}\right]$

Espero ter ajudado!

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