A good answer might be:
Yes, A4×4 04×4 ==
04×4 A4×4 ==
For some matrices AB == BA.
But not in general.
It would be good at this point to practice matrix multipliction.
The goal is to interalize the idea so that it becomes one of your
active concepts, not a faintly recalled notion you have to look up
In the following,
mentally (or on paper) multiply the two matrices.
Click on the "=" button to check your answer.
Change elements in A and B
and work the problem again.
To change an element, replace the contents of a cell
with an integer (only) and then click outside of the cell.
Try some interesting problems, such as:
Do you suspect that x(AB) == (xA)B
for scalar (real number) x?