Question

Please help! Correct answer only, please!

Given matrix A and B both have dimensions 2 x 2 and are the inverse of one another what should be the following product?




A · B



A.



B.



C.



D.

Answer 1

B)

Explanation:

If two square matrix, with same dimensions, are inverse of one another, their product will always be the identity matrix with the same dimensions.

The matrix A and B are 2x2, so the result of the product A * B is a 2x2 identity matrix, that is represented as follows:

I = [1 0 ; 0 1]

(First line: 1 0, second line: 0 1)

So the correct option is B)