Question

ME AJUDEM!!!!!
matrizes
​

Answer 1

Resposta:

a) $\left[\begin{array}{ccc}5\\4\\2\end{array}\right]$            b) $\left[\begin{array}{ccc}50&12\\37&3\\\end{array}\right]$      c)   $\left[\begin{array}{ccc}12&13\\3&1\\22&24\end{array}\right]$       d )  $\left[\begin{array}{ccc}6&12\\7&4\end{array}\right]$

Explicação passo a passo:

1 a)

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

b)

$\left[\begin{array}{ccc}4&6\\1&5\\\end{array}\right]$ * $\left[\begin{array}{ccc}2&3\\7&0\\\end{array}\right]$ = $\left[\begin{array}{ccc}4*2+6*7&4*3+6*0\\1*2+5*7&1*3+5*0\\\end{array}\right]$ =  $\left[\begin{array}{ccc}50&12\\37&3\\\end{array}\right]$

c)

$\left[\begin{array}{ccc}2&3\\1&0\\4&5\end{array}\right]$  * $\left[\begin{array}{ccc}3&1\\2&4\end{array}\right]$  =$\left[\begin{array}{ccc}2*3+3*2&2*1+3*4\\1*3+0*2&1*1+0*4\\4*3+5*2&4*1+5*4\end{array}\right]$ = $\left[\begin{array}{ccc}12&13\\3&1\\22&24\end{array}\right]$

d)

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

= $\left[\begin{array}{ccc}6&12\\7&4\end{array}\right]$

Nota  → Tem os cálculos que se fazem , para poder aprender.

Bons estudos.

---------------------------

Símbolos: ( * ) multiplicação