Question

Sejam as matrizes A2x2 onde aij = Restante da questão em anexo.

Answer 1

As posicoes ij serao apresentadas como subscritos na matriz:

$A=\left[\begin{array}{cc}a_{11}&a_{12}\\a_{21}&a_{22}\end{array}\right] =\left[\begin{array}{cc}2^1&2^2\\1^2&2^2\end{array}\right]=\left[\begin{array}{cc}2&4\\1&4\end{array}\right]\\\\\\B=\left[\begin{array}{cc}1&0\\0&1\end{array}\right]\\\\\\A^T=\left[\begin{array}{cc}2&1\\4&4\end{array}\right]$

$C=A^T+B=\left[\begin{array}{cc}2&1\\4&4\end{array}\right]+\left[\begin{array}{cc}1&0\\0&1\end{array}\right]=\left[\begin{array}{cc}2+1&1+0\\4+0&4+1\end{array}\right]=\boxed{\left[\begin{array}{cc}3&1\\4&5\end{array}\right]}$