Question

Perkalian matriks, tolong yah

Answer 1

Jawabannya C
| 3   0 |     | 1   -1 |    | 3+0      -3+0 |     |  3     -3  |
| 2  -1 | x  |          | = | 2-3       -2+2 | =  |  -1     0  |
| -4  2 |     | 3   -2 |    | -4+6      4-4  |     |  2      0  |

Answer 2

A x B

R 1 1 = (3 x 1) + (0 x 3) = 3
R 1 2 = (3 x -1) + (0 x -2 = -3

R 2 1 = (2 x 1) + (-1 x 3) = -1
R 2 2 = (2 x -1) + (-1 x -2) = 0

R 3 1 = (-4 x 1) + (2 x 3) = 2
R 3 2 = (-4 x -1) + (2 x -2) = 0

Sehingga, matriks A x B adalah :



Jadi, jawabannya C

Ok?