Question

Dado as matrizes A= 1 2 3 4 e B= 5 -3 1 0


Calcule
a) 2 det A+(det B)³

Answer 1

A= 1 2 3 4 e B= 5 -3 1 0


Calcule 

a) 2 det A+(det B)³  =  - 4 + 27 ==> 23

2DetA = 2.(-2) = - 4

(DetB)³ = 3³ = 27

A =  1    2        ==> DetA = 1.4 - 2.3 = 4 - 6 ==> - 2
       3    4
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B =  5   -3        ==> DetB = 5.0 - 1.(-3) = 0 + 3 ==> 3
       1    0
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