Question

Matrix Methods/Linear Algebra: Please show all work and justify the answer!

1. Consider the following matrices. [-1:] 1 2 2 0 A= -10.B=3-4 and C= 3 4 5 Compute each of the following, if it is defined. If an expression is undefined, explain why. (a) (4 points) A+B (b) (4 points) 2B (e) (4 points) AC (d) (4 points) CB

Answer 1

Here, equals rows (1) and coluano B are not to each cether, thi expression is undefined. So co AC 2 4 -1 3 4 2x2 -34 Here the morows columns of c is of А is equal to so this expression So, (1XD+1) (2) (4x) + (280) (10 710x4 HX4) + Öxo) (3x1) + (4*-12 (3x7+ (480) 4 to -140 --4to 3+(-4) 12 to 4 -4 Aca 12