Question

Dadas as matrizes A= [ 1 3 ] e B = [ 4 -1 ]
[ 0 -2] [ 1 2 ]
Determine:

A×B

Answer 1

| 1  3|  x  | 4  -1|
| 0 -2|     | 1  2 |

|(1.4)+(3.1)      [1.(-1)]+(3.2)     |
|(0.4)+[(-2).1]   [0.(-1)]+[(-2).2]  |

|  7   5  |
| -2  -4  |