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leopaulino38
@leopaulino38
March 2022
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Matriz e Determinantes
Exercícios (a), (b), (c)
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claudiasoueu
A) 3 -1 1 1 -1 1
Δ = 2 0 3 Δx = -1 0 3
4 1 -2 7 1 -2
Δ = -12 +2-9-4 = -23
Δx = -21-1-3+2 = -23
3 1 1 3 -1 1
Δy = 2 -1 3 Δz = 2 0 -1
4 7 -2 4 1 7
Δy = 6+12+4+4-63+4 = -23 Δz = 4+2+14+3 = 23
Logo,
x
=
Δx
=
-23
=
1
Δ -23
y
=
Δy
=
-23
=
1
Δ -23
z
=
Δz
=
23
=
-1
Δ -23
======================
b)
-1 -1 1 1 -1 1
Δ = 1 1 1 Δx = 1 1 1
2 3 2 0 3 2
Δ= -2-2+3-2+3+2 = 2 Δx = 2+3-3+2 = 4
-1 1 1 -1 -1 1
Δy = 1 1 1 Δz= 1 1 1
2 0 2 2 3 0
Δy = -2+2-2+2 = 0 Δz = -2+3-2+3 = 2
Então
x = 4/2 = 2
y = 0/2 = 0
z = 2/2 = 1
0 votes
Thanks 1
leopaulino38
Você é Ótima !!!
claudiasoueu
Thank's! Você também, porque está estudando!!!
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Lista de comentários
Δ = 2 0 3 Δx = -1 0 3
4 1 -2 7 1 -2
Δ = -12 +2-9-4 = -23 Δx = -21-1-3+2 = -23
3 1 1 3 -1 1
Δy = 2 -1 3 Δz = 2 0 -1
4 7 -2 4 1 7
Δy = 6+12+4+4-63+4 = -23 Δz = 4+2+14+3 = 23
Logo,
x = Δx = -23 = 1
Δ -23
y = Δy = -23 = 1
Δ -23
z = Δz = 23 = -1
Δ -23
======================
b)
-1 -1 1 1 -1 1
Δ = 1 1 1 Δx = 1 1 1
2 3 2 0 3 2
Δ= -2-2+3-2+3+2 = 2 Δx = 2+3-3+2 = 4
-1 1 1 -1 -1 1
Δy = 1 1 1 Δz= 1 1 1
2 0 2 2 3 0
Δy = -2+2-2+2 = 0 Δz = -2+3-2+3 = 2
Então
x = 4/2 = 2
y = 0/2 = 0
z = 2/2 = 1