Question

Multiply.
A X B.
$A = \left[\begin{array}{cccc}-3&-4&-1&4\\1 &2&3&0\\\end{array}\right] \\\\\\B = \left[\begin{array}{cc}5&6\\1&2\\7&8\\-3&9\end{array}\right]$

Answer 1

Hey there!

Given,

$A = \left[\begin{array}{cccc}-3&-4&-1&4\\1 &2&3&0\\\end{array}\right] \\\\\\B =\left[\begin{array}{cc}5&6\\1&2\\7&8\\-3&9\end{array}\right]\\\\\\=A\times B\\\\=\left[\begin{array}{cccc}-3&-4&-1&4\\1&2&3&0\\\end{array}\right] \cdotp \left[\begin{array}{cc}5&6\\1&2\\7&8\\-3&9\end{array}\right]\\\\\\= \left[\begin{array}{cccc}-15-4-7-12&-18-8-8+36\\5+2+21+0 &6+4+24+0\\\end{array}\right]\\\\\\=\left[\begin{array}{ccc}-38&2\\28&34\end{array}\right]$

Hope It Helps You!

Answer 2

Hey!

Refer the below attachment !

Thanks !