Question

matrizes (2a + 3b) e ( -a -b) a 1 5 -2 3 6 3 4 7 4 b -2 3 1 4 4 1 5 2 0

Answer 1

$<var>A=\left[\begin{array}{ccc}1&5&-2\\3&6&3\\4&7&4\end{array}\right]\\ \\ B=\left[\begin{array}{ccc}-2&3&1\\4&4&1\\5&2&0\end{array}\right]\\</var>$

 

$<var>(2A+3B)= 2A=\left[\begin{array}{ccc}2&10&-4\\6&12&6\\8&14&8\end{array}\right]\\ +\\ 3B=\left[\begin{array}{ccc}-6&9&3\\12&12&3\\15&6&0\end{array}\right]\\ (2A+3B)=\left[\begin{array}{ccc}-4&19&-1\\18&24&9\\23&20&8\end{array}\right]\\ (-A-B)=\\ -A=\left[\begin{array}{ccc}-1&-5&2\\-3&-6&-3\\-4&-7&-4\end{array}\right]\\ (-A-B)=\left[\begin{array}{ccc}-3&-2&3\\1&-2&-2\\1&-5&-4\end{array}\right]\\</var>$

Answer 2

Resposta não sei essas resposta,sou péssimo em matemática,mas eu sei português e outras matérias.

Explicação passo-a-passo: