· Notice that AB exists and so does ba with ba being(2x2) AB exists, BA does not exist as a (3x2)cannot be m ultiplied into a(3x3) ab does not exist, It's possible that ba exists How to calculate the elements of c=AB Exampl np e 123 A=456 B=11 789 68 C=AB= 67 266• Notice that: – AB exists and so does BA with BA being (2x2) – AB exists, BA does not exist as a (3x2) cannot be multiplied into a (3x3) – AB does not exist, It’s possible that BA exists • How to calculate the elements of C=AB – Example           = =           =           = 266 67 68 12 11 10 9 6 3 8 5 2 7 4 1 C AB A B