Mathematics, 01.10.2019 13:30 aamu15
Ireally need with this question on multiplying matrices, i've been stuck on it for over 20 minutes and i'm about to cry (ignore the 240 at the end, it's probably wrong)
Answers: 1
![ \left[\begin{array}{cccc}9&4&8&6\\2&0&3&1\\1&-2&5&0\end{array}\right] \left[\begin{array}{cc}12&2\\15&1\\3&9\\8&11\end{array}\right] =](/tpl/images/0279/8201/021b9.png)
![\left[\begin{array}{cc}9*12+4*15+8*3+6*8&9*2+4*1+8*9+6*11\\2*12+0*15+3*3+1*8&2*2+0*1+3*9+1*11\\1*12+-2*15+5*3+0*8&1*2+-2*1+5*9+0*11\end{array}\right]](/tpl/images/0279/8201/4cdc2.png)
=![\left[\begin{array}{cc}108+60+24+48&18+4+72+66\\24+0+9+8&4+0+27+11\\12+-30+15+0&2+-2+45+0\end{array}\right]](/tpl/images/0279/8201/a43f9.png)
=![\left[\begin{array}{cc}240&160\\41&42\\-3&45\end{array}\right]](/tpl/images/0279/8201/75869.png)
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Ireally need with this question on multiplying matrices, i've been stuck on it for over 20 minutes...
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