Question

considere as duas matrizes abaixo. a) determine at e bt . b) determine as matrizes opostas de a e b​

Answer 1

$\large\boxed{\begin{array}{l}\rm Considere~duas~matrizes~abaixo.\\\rm A=\begin{pmatrix}\sf1&\sf8\\\sf1&\sf2\end{pmatrix}~B=\begin{pmatrix}\sf8&\sf2\\\sf1&\sf2\end{pmatrix}\\\rm determine:\\\tt a)~~\rm A^{T}~e~B^{T}\\\tt b)~\rm determine~as~matrizes~opostas~de~A~e~B\end{array}}$

$\large\boxed{\begin{array}{l}\underline{\rm soluc_{\!\!,}\tilde ao\!:}\\\ \tt a)~\sf A^{T}=\begin{pmatrix}\sf1&\sf1\\\sf8&\sf2\end{pmatrix}~B^{T}=\begin{pmatrix}\sf8&\sf1\\\sf2&\sf2\end{pmatrix}\\\tt~ b)~\sf -A=\begin{pmatrix}\sf-1&\sf-8\\\sf-1&\sf-2\end{pmatrix}~~~-B=\begin{pmatrix}\sf-8&\sf-1\\\sf-2&\sf-2\end{pmatrix}\end{array}}$