Question

The answer is not B? Please Help!!!

Answer 1

Answer:

$\left[\begin{array}{cc}a_{1}&a_{2}\\a_{3}&a_{4}\end{array}\right] * \left[\begin{array}{cc}b_{1}&b_{2}\\b_{3}&b_{4}\end{array}\right] = \left[\begin{array}{cc}(a_{1} * b_{1} + a_{2}* b_{3})&(a_{1} * b_{2} + a_{2} * b_{4})\\(a_{3} * b_{1} + a_{4} * b_{3})&(a_{3} * b_{2} + a_{4} * b_{4})\end{array}\right]$

Plugging in the values from the two matrices will give us the answer A

Answer 2

Answer: The correct option is A

Step-by-step explanation:

The transpose of a matrix is the matrix formed by interchanging the rows with the columns. It means that the transpose of matrix A would be

5 3

2 - 1

By multiplying, we would multiply the terms in each row by the corresponding terms in the columns and add.

The product of matrix A and its transpose would be

5 2 × 5 3

3 - 1 2 - 1

It becomes

25 + 4 15 + (- 2)

15 - 2 9 + 1

The final answer is

29 13

13 10