Question

Whats the answer to this question?

Answer 1

Try -4

Sorry if it's incorrect.

Explanation:

Answer 2

[3, -1]

Explanation:

The computation is performed element by element, as you appear to have figured.

2f -g = 2[4, 1] -[5, 3] = [2·4 -5, 2·1 -3] = [8-5, 2-3]

2f -g = [3, -1]