Question

If A = `[(2, 1),(-1, 3)], B = [(-3, 2),(4, 1)], C = [(-3, 0),(4, 1)]`, verify the following:

A + B = B + A

Answer 1

Find A + B

A + B = `[(2 + (-3), 1 + 2),(-1 + 4, 3 + 1)]`

= `[(-1, 3),(3, 4)]`

Find B + A

B + A = `[(-3 + 2, 2 + 1),(4 + (-1), 1 + 3)]`

= `[(-1, 3),(3, 4)]`

Hence verified,

A + B = B + A