Sum
If `A = [(1, 2),(2,1)]` and `B = [(2, 1),(1, 2)]` Find A(BA)
Advertisement Remove all ads
Solution
`A = [(1, 2),(2, 1)], B = [(2, 1),(1, 2)]`
`BA = [(2, 1),(1, 2)][(1, 2),(2, 1)]`
`= [(2 + 2, 4 + 1),(1 + 4, 2 + 2)]`
`= [(4, 5),(5, 4)]`
`A(BA) = [(1, 2),(4, 5)],[(4, 5),(5, 4)]`
`= [(4 + 10, 5 + 8),(8 + 5, 10 + 4)]`
`= [(14, 13),(13, 14)]`
Concept: Matrices Examples
Is there an error in this question or solution?
Advertisement Remove all ads
APPEARS IN
Advertisement Remove all ads
Advertisement Remove all ads
