Question

alguém me ajude por favor é urgente..

Answer 1

Cálculo com Matrizes:

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

A x B  =  B x A

$\left[\begin{array}{ccc}5*(-1)&2*1\\3*2&-4*(-5)\end{array}\right]= \left[\begin{array}{ccc}-5&2\\6&20\end{array}\right]$

A²

$\left[\begin{array}{ccc}5 ^{2} &2 ^{2} \\3 ^{2} &-4 ^{2} \end{array}\right]= \left[\begin{array}{ccc}25&4\\9&16\end{array}\right]$

B²

$\left[\begin{array}{ccc}-1 ^{2} & 1^{2} \\ 2^{2} & -5^{2} \end{array}\right]= \left[\begin{array}{ccc}1&1\\4&25\end{array}\right]$