Question

Dada as matrizes:

A=
2 3 8
5 -4 0

B=
4 5 -9
2 5 6

C=
2 0
3 5
-4 -10

Determine:

a) A + B
b) B - A
c) 4 x C​

Answer 1

a)

A B

| 2 3 8 | + | 4 5 9 | = | 6 8 17 |

| 5 -4 0 | | 2 5 6 | | 7 1 6 |

b)

A B

| 4 5 9 | - | 2 3 8 | = | 2 2 1 |

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

c)

C

| 2 0 | | 8 0 |

4 . | 3 5 | = | 12 20 |

| -4 -10 | | -16 -40 |