Question

If matrices A=[-2 -1
5 0
-1 4] and matrices B=[-2 3 1
4 0 2] find (i) 2A+3B' (ii) 3B'-A

Answer 1

as complement of B means exchanging the rows for coloumns and coloumns for rows we do that for B and multiply each element*3 and add with A whose elements are multiplied with 2
similarly we can do the second one