alguém me ajude por favor é urgente..
Anexos:

Soluções para a tarefa
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2
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] \left[\begin{array}{ccc}5&2\\3&-4\end{array}\right] e \left[\begin{array}{ccc}-1&1\\2&-5\end{array}\right]](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D5%26amp%3B2%5C%5C3%26amp%3B-4%5Cend%7Barray%7D%5Cright%5D+e++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%26amp%3B1%5C%5C2%26amp%3B-5%5Cend%7Barray%7D%5Cright%5D)
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] \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]](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D5%2A%28-1%29%26amp%3B2%2A1%5C%5C3%2A2%26amp%3B-4%2A%28-5%29%5Cend%7Barray%7D%5Cright%5D%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-5%26amp%3B2%5C%5C6%26amp%3B20%5Cend%7Barray%7D%5Cright%5D)
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] \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]](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D5+%5E%7B2%7D+%26amp%3B2+%5E%7B2%7D+%5C%5C3+%5E%7B2%7D+%26amp%3B-4+%5E%7B2%7D+%5Cend%7Barray%7D%5Cright%5D%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D25%26amp%3B4%5C%5C9%26amp%3B16%5Cend%7Barray%7D%5Cright%5D)
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] \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]](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1+%5E%7B2%7D+%26amp%3B+1%5E%7B2%7D+%5C%5C+2%5E%7B2%7D+%26amp%3B+-5%5E%7B2%7D+%5Cend%7Barray%7D%5Cright%5D%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%26amp%3B1%5C%5C4%26amp%3B25%5Cend%7Barray%7D%5Cright%5D)
A x B = B x A
A²
B²
brunosousasilva:
Marque como melhor resposta !
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