Question

A = [2 3 4
3 4 5
4 5 6]
B =[1 -3 5
0 2 4
3 0 5]
fimd A×B ​

Answer 1

Answer:

|14 12 42|

|18 14 51|

|22 16 75|

Step-by-step explanation:

A × B =

|2 3 4| |1 -3 5|

|3 4 5| × |0 2 4|

|4 5 6| |3 0 5|

= |2×1 + 3×0 + 4×3 2×-3 + 3×2 + 4×3 2×5 + 3×4 + 4×5|

|3×1 + 4×0 + 5×3 3×-3 + 4×2 + 5×3 3×5 + 4×4 + 5×5|

|4×1 + 5×0 + 6×3 4×-3 + 5×2 + 6×3 5×5 + 5×4 + 6×5|

= |2 + 0 + 12 -6 + 6 + 12 10 + 12 + 20|

|3 + 0 + 15 -9 + 8 + 15 15 + 16 + 20|

|4 + 0 + 18 -12 + 10 + 18 25 + 20 + 30|

= |14 12 42|

|18 14 51|

|22 16 75|

(P.S. This took me 20 minutes to write by hand, it would mean a lot if you thanked my answer)