Question

Calcule o determinante da matriz



A= (-1 2 -2)
(2 1 2 )
(3 4 3)

Answer 1

Resposta:

{{-1, 2, -2}, {2, 1, 2}, {3, 4, 3}}|

=(-1)*1*3+2*2*3+(-2)*2*4-3*1*(-2)-4*2*(-1)-3*2*2=    -5

Answer 2

Resposta:-1.1.3+2.4.-2+3.2.2-3.1.-2-2.4.-1-3.2.2=-3-16+12+6+8-12=-19+14=-5