Question

Va rog ajutatima e urgent

Answer 1

$\left[\begin{array}{ccc}5&2&1\\3&0&2\end{array}\right] \left[\begin{array}{ccc}1&3&0\\1&1&4\\3&0&0\end{array}\right] = \left[\begin{array}{ccc}5+2+3&15+2+0&0+8+0\\3+0+6&9+0+0&0+0+0\end{array}\right]$=$\left[\begin{array}{ccc}10&17&8\\9&9&0\end{array}\right]$

$\left[\begin{array}{ccc}A1&B1\\C1&D1\end{array}\right] \left[\begin{array}{ccc}A2&B2\\C2&D2\end{array}\right]$=$\left[\begin{array}{ccc}A1*A2+B1*C2&A1*B2+B1*D2\\C1*A2+D1*C2&C1*B2+D1*D2\end{array}\right]$