Question

Ajudem-me por favor, o assunto é matrizes.

Answer 1

$\left[\begin{array}{ccc}1&3\\2&0\\-1&4\end{array}\right]$

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Matriz transposta de B

$\left[\begin{array}{ccc}2&1\\3&1\end{array}\right] ^T =\ \textgreater \ \left[\begin{array}{ccc}2&3\\1&1\end{array}\right]$

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$B^t . C$

Calulo da multiplicação

 2 * 4 ÷ 3 * (-1)
1 * 4 ÷ 1 * (-1)

$\left[\begin{array}{ccc}2&3\\1&1\end{array}\right] * \left[\begin{array}{ccc}4\\-1\end{array}\right] =\ \textgreater \ \left[\begin{array}{ccc}5\\3\end{array}\right]$

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e)

$B * A^t$

Calculo da multiplicação:
$2 * 1 \div 1 * 3 ~~~~2 * 2 \div 1 * 0 ~~~~2*(-1) \div 1 * 4 \\ 3* 1 \div 1 * 3 ~~~3*2 \div 1 *0~~~3*(-1)\div 1 *4 \\ \\ \\ \left[\begin{array}{ccc}5&4&2\\6&6&1\end{array}\right]$


$\left[\begin{array}{ccc}2&1\\3&1\end{array}\right] * \left[\begin{array}{ccc}1&2&-1\\3&0&4\end{array}\right] =\ \textgreater \ \left[\begin{array}{ccc}5&4&2\\6&6&1\end{array}\right]$

Answer 2

Oi também preciso de ajuda