Question

[3 1 2 -1]. [a b c d]= [-7 2 -3 -2] quais são os valores de a b c e d ?

Answer 1

[3 1 2 -1] x [a b c d] = [-7 2 -3 -2]

3a = -7
a = -7/3

1b = 2
b = 2

2c = -3
c = -3/2

-1d = -2
d = 2