Use the numerical representation for the month and date of today's date as elements in matrix A, where the month is the elements in the first row and the date is the elements in the second row. For example, if today's date is March 12, then matric A would be represented as: A =[0 3
1 2]

Represent the month of January (1) and the date (7) (excluding the year) the same way in a 2 by 2 matrix for matrix B. Use the two matrices to compute the following, if possible. If the computation is not possible, explain why. Show all of your work.

1. A+B

2. B-A

3. A B

4.B^-1