Question 175434
I am assuming that A is a 2x2 since you cannot multiply a 1x2 and a 1x4 matrix
:
{{{(matrix(1,2,1,2))}}}{{{(matrix(2,2,3,0,2,-1))}}}={{{(matrix(1,2,-1,2))}}}
:
now multiply by 2 {{{(matrix(1,2,-1,2))}}}={{{(matrix(1,2,-2,4))}}}