Question

How do you multiply `((1, 2, 12), (13, 2, 1))` with `((4, 8), (4, 3), (5, 2))`?

Answer 1

The answer is `=((72,38),(65,112))`

Explanation:

The matrix multiplication is

`((a,b,c),(d,e,f)).((l,m),(n,p),(q,r))`

`=((al+bn+fq,am+bp+cr),(dl+en+fq,dm+ep+rf))`

`((1,2,12),(13,2,1)).((4,8),(4,3),(5,2))`

`=((4+8+60,8+6+24),(52+8+5,104+6+2))`

`=((72,38),(65,112))`