Answer:
The additive inverse of A is -A. So, the additive inverse of A = [p q] is -A = [-p -q].
Here's how we can find the additive inverse of a matrix:
Find the additive inverse of each element in the matrix.
Replace each element in the matrix with its additive inverse.
For example, the additive inverse of p is -p. So, the additive inverse of the first element in A is -p.
The additive inverse of q is -q. So, the additive inverse of the second element in A is -q.
Plugging in these values, we get the following:
Additive inverse of A = [-p -q]
Explanation: