- 4 8 3 2 Find the following matrices where A = 8 and B = 6 - 5 9 - 1 - 9 - 1 а. А + В b. А - В с. - ЗА d. - 6A + 7B

Find A? and A3 by (1) matrix product, (2) block- matrix product. (: 7). В -В B = 1 A -B В 1

Suppose that we have 5 matrices A a 3 x 2 matrix, B a 2 x 3 matrix, C a 4 x 4 matrix, D a 3 x 2 matrix, and E a 4 x 4 matrix. Which of the following matrix operations are defined? A. 4E- 6D D в. С + Е+D Dс. 4B D. A D Е. ЗС — 6D F. C E G. 3A H. 4D A I. A B

-3 4 -5 (1 point) If Å = 1 and B = 3 then 1 6 AB = and ВА — Choose v True or False: AB = BA for any two square matrices A andB of the same size.