Question

Please help! Correct answer only, please! Find the product AB, if possible. Explain if it is not possible. A. B. C. D.

Answer 1

Answer: choice A

Explanation:

You have to multiply each row by its corresponding column.

For example you multiply 1*5 and put it in the first row and first column(a1b1). you multiply 5*5 and put it in the second row and first column(a2b1) and so on.

when multiplying a 3*1 matrix by a 1*3 matrix you’ll get a 3*3 matrix.