Find AB, if possible. Please help?

Question

A=
[-1 0 -5]
[2 -3 -2]
[0 -5 3]

B = [-2] [-3] [4] (Make a column, 3 x 1!)

Answer 1

Hi,
The formatting may be a little messy because of the limitations of this work processor, but here goes anyway.

[-1 0 -5]… [-2]
[2 -3 -2]… [-3]
[0 -5 3]…... [4]

[2+0-20]
[-4+9-8 ]
[0 +15+12]

[-18]
[-3]
[27]

FE