Question

Determine o valor de cada determinante das matrizes apresentadas abaixo:

Answer 1

Oieee

Bom,

________

A = | 2 4 |

| 6 8|

Det = a¹¹ × a²² - a¹² × a²¹

Det = 2 × 8 - 4 × 6

Det = 16 - 24

Det = -8

_

B = | 1 0 3|1 0

| 4 1 0|4 1

| 5 0 1|5 0

Det =( a¹¹ × a²² × a³³ + a¹² × a²³ × a³¹ + a¹³ × a²¹ × a³² )- (a¹² × a²¹ × 1³³ + a¹¹ × a²³ × a³² + a¹³ × a²² × a³¹)

Det =

1 × 1 × 1 = 1

0 × 0 × 5 = 0

3 × 4 × 0 = 0

_

0 × 4 × 1 = 0

1 × 0 × 0 = 0

3 × 1 × 5 = 15

_

Det = (1 + 0 + 0) - ( 15 + 0 + 0)

Det = 1 - 15

Det = -14

______________________

Qualquer dúvida me avise

A$$: MarcosPCV