Find the sum

[1 4] [0 0]
[0 3] + [0 0]

A - [1 4]
[0 3]

B - undefined

C - [0 0]
[0 0]

D - [1 0]
[4 3]

1 answer

Adding a zero matrix leaves the other value unchanged. So, (A)

you can play around with matrix operations and verify your answers at wolframalpha.com type in commands like

{{1,0},{4,3}}*{{3,2},{-1,-3}}
{{1,0},{4,3}}+{{3,2},{-1,-3}}
det {{1,0},{4,3}}
inv {{1,0},{4,3}}