Question

Ola sou muito ruim em matematica quero a ajuda de vcs ai

Answer 1

Para fazer a soma de matrizes, devemos somar cada elemento de uma com o elemento correspondente da outra, veja:

1 questão :

A+B :

$\left[\begin{array}{ccc}1+2&2+0\\3+1&2+2\\4+2&3+2\end{array}\right]$ ⇒$\left[\begin{array}{ccc}3&2\\4&4\\6&5\end{array}\right]$

A-B:

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

2 questão:

A+B

$\left[\begin{array}{ccc}1+1&2+0\\3+2&4+1\\\end{array}\right]$⇒$\left[\begin{array}{ccc}2&2\\5&5\\\end{array}\right]$

A-B

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

(A+B)t

Para fazer as matrizes transpostas, pegamos as colunas e transformamos em linha:

A+B ⇒$\left[\begin{array}{ccc}2&2\\5&5\\\end{array}\right]$

(A+B)t ⇒ $\left[\begin{array}{ccc}2&5\\2&5\\\end{array}\right]$

3 questão:

A+B

$\left[\begin{array}{ccc}1+(-7)&2+(-8)&3+9\\-4+12&5+6&6+5\\4+8&6+7&8+4\end{array}\right]$⇒$\left[\begin{array}{ccc}-6&-6&12\\8&11&11\\12&13&12\end{array}\right]$

A+C

$\left[\begin{array}{ccc}1+2&2+3&3+(-4)\\-4+6&5+7&6+1\\4+2&6+8&8+7\end{array}\right]$⇒$\left[\begin{array}{ccc}3&5&-1\\2&12&7\\6&14&15\end{array}\right]$

B+C

$\left[\begin{array}{ccc}-7+2&-8+3&9+(-4)\\12+6&6+7&5+1\\8+2&7+8&4+7\end{array}\right]$⇒$\left[\begin{array}{ccc}-5&-5&5\\18&13&6\\10&15&11\end{array}\right]$

A+B+C

$\left[\begin{array}{ccc}1+(-7)+2&2+(-8)+3&3+9+(-4)\\-4+12+6&5+6+7&6+5+1\\4+8+2&6+7+8&8+4+7\end{array}\right]$⇒$\left[\begin{array}{ccc}-4&-3&8\\14&18&12\\14&21&19\end{array}\right]$

Espero ter ajudado, Boa sorte nos estudos!!!!